diff --git a/src/testium/interpreter/process.py b/src/testium/interpreter/process.py
index 9432d3b..84d5b6b 100644
--- a/src/testium/interpreter/process.py
+++ b/src/testium/interpreter/process.py
@@ -37,6 +37,7 @@ class TestProcess(Process):
         tst_control: TestSetController,
         config_files,
         defines,
+        gui_defaults={},
     ) -> None:
         super().__init__()
         self.__fname = file_name
@@ -44,6 +45,7 @@ class TestProcess(Process):
         self.__tctrl = tst_control
         self.__cfgf = config_files
         self.__defs = defines
+        self.__gui_defaults = gui_defaults  # default values coming from GUI prefs
         self.__exec = False
         self.__loaded = False
         self.__closed = False
@@ -64,7 +66,11 @@ class TestProcess(Process):
 
                 # Load the test file
                 test_dict, cfg_files = load_test(
-                    self.__fname, test_dir, self.__cfgf, self.__defs
+                    self.__fname,
+                    test_dir,
+                    self.__cfgf,
+                    self.__defs,
+                    self.__gui_defaults,
                 )
 
                 # Backup the global dict in case of restart of the test
@@ -89,6 +95,8 @@ class TestProcess(Process):
 
                 # Python & lua functions call subprocess initialization
                 py_fproc = py_func_call_init(tm.gd("python_path", ""), api_request, 10)
+
+                # Lua functions call subprocess initialization
                 lua_fproc = None
                 if test_set.isTestTypePresent(cst_type.TYPE_LUA_FUNCTION):
                     lua_fproc = lua_func_call_init(tm.gd("lua_path", ""), api_request, 10)
diff --git a/src/testium/interpreter/utils/settings.py b/src/testium/interpreter/utils/settings.py
index fddaeb8..9f46ff2 100644
--- a/src/testium/interpreter/utils/settings.py
+++ b/src/testium/interpreter/utils/settings.py
@@ -35,6 +35,8 @@ class TestiumSettings():
     SettingsLogFont = SettingsItem('logFont', str)
     SettingsLogFontSize = SettingsItem('logFontSize', int)
     SettingsGitSupported = SettingsItem('logGitSupported', bool)
+    SettingsPythonPath = SettingsItem('pythonPath', str)
+    SettingsLuaPath = SettingsItem('luaPath', str)
 
     def __init__(self):
         if 'windows' in platform.system().lower():
@@ -256,3 +258,23 @@ class TestiumSettings():
     @git_supported.setter
     def git_supported(self, value):
         self.set_value(self.SettingsGitSupported, value)
+
+# SettingsPythonPath = 'pythonPath'
+    @property
+    def python_path(self):
+        r = self.value(self.SettingsPythonPath, "")
+        return r
+
+    @python_path.setter
+    def python_path(self, value):
+        self.set_value(self.SettingsPythonPath, value)
+
+# SettingsLuaPath = 'luaPath'
+    @property
+    def lua_path(self):
+        r = self.value(self.SettingsLuaPath, "")
+        return r
+
+    @lua_path.setter
+    def lua_path(self, value):
+        self.set_value(self.SettingsLuaPath, value)
\ No newline at end of file
diff --git a/src/testium/interpreter/utils/test_init.py b/src/testium/interpreter/utils/test_init.py
index aebf58e..b1d3af7 100644
--- a/src/testium/interpreter/utils/test_init.py
+++ b/src/testium/interpreter/utils/test_init.py
@@ -163,7 +163,7 @@ def _load_test_dict(test_file, variables: dict, no_include: bool = False, raw_in
     return d
 
 
-def load_test(test_file, test_dir, cmdline_pfs, cmdline_defs):
+def load_test(test_file, test_dir, cmdline_pfs, cmdline_defs, gui_defaults):
     # First step: populate config files without includes considered
     test_dict = _load_test_dict(test_file, {}, no_include=True)
     _check_test_dict(test_dict)
@@ -177,7 +177,7 @@ def load_test(test_file, test_dir, cmdline_pfs, cmdline_defs):
     old_pfs = _config_files_from_test(test_dict, cmdline_pfs)
 
     # Variables updated
-    gd = update_global(old_pfs, cmdline_defs, silent=True)
+    gd = update_global(old_pfs, cmdline_defs, gui_defaults, silent=True)
 
     while True:
         # Loop to check param files until all param files are identified
@@ -201,7 +201,7 @@ def load_test(test_file, test_dir, cmdline_pfs, cmdline_defs):
             break
 
         # Variables updated
-        gd = update_global(new_pfs, cmdline_defs, silent=False)
+        gd = update_global(new_pfs, cmdline_defs, gui_defaults, silent=False)
         old_pfs = copy.copy(new_pfs)
 
     # Processing (with includes) for complete file loading
@@ -297,11 +297,19 @@ def _check_test_dict(test_dict):
             "The tum file has a major problem. The 'main' section could not be found.")
 
 
-def update_global(config_files, defines, silent=False):
+def update_global(config_files, defines, gui_defaults, silent=False):
     '''Global dict updated with the content of the config file and a dict provided.
     this function returns the resulting dict.
     '''
-    # command line defines are applied first
+    # GUI preferences applied first
+    for k, v in gui_defaults.items():
+        try:
+            val = ast.literal_eval(v)
+        except:
+            val = v
+        tm.setgd(k, val)
+
+    # Then command line defines
     for k, v in defines.items():
         try:
             val = ast.literal_eval(v)
diff --git a/src/testium/main_win/preference_win/preference_core_win.py b/src/testium/main_win/preference_win/preference_core_win.py
index 9171227..baeedc6 100644
--- a/src/testium/main_win/preference_win/preference_core_win.py
+++ b/src/testium/main_win/preference_win/preference_core_win.py
@@ -26,7 +26,7 @@ class Ui_preferenceWindow(object):
     def setupUi(self, preferenceWindow):
         if not preferenceWindow.objectName():
             preferenceWindow.setObjectName(u"preferenceWindow")
-        preferenceWindow.resize(597, 386)
+        preferenceWindow.resize(597, 525)
         sizePolicy = QSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
         sizePolicy.setHorizontalStretch(0)
         sizePolicy.setVerticalStretch(0)
@@ -50,14 +50,14 @@ class Ui_preferenceWindow(object):
         self.verticalLayout.setObjectName(u"verticalLayout")
         self.scrollArea = QScrollArea(self.tabInterfaceParams)
         self.scrollArea.setObjectName(u"scrollArea")
-        self.scrollArea.setFrameShape(QFrame.NoFrame)
-        self.scrollArea.setFrameShadow(QFrame.Sunken)
-        self.scrollArea.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
-        self.scrollArea.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        self.scrollArea.setFrameShape(QFrame.Shape.NoFrame)
+        self.scrollArea.setFrameShadow(QFrame.Shadow.Sunken)
+        self.scrollArea.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
+        self.scrollArea.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAsNeeded)
         self.scrollArea.setWidgetResizable(True)
         self.scrollAreaWidgetContents = QWidget()
         self.scrollAreaWidgetContents.setObjectName(u"scrollAreaWidgetContents")
-        self.scrollAreaWidgetContents.setGeometry(QRect(0, -9, 557, 152))
+        self.scrollAreaWidgetContents.setGeometry(QRect(0, 0, 557, 210))
         self.formLayout = QFormLayout(self.scrollAreaWidgetContents)
         self.formLayout.setObjectName(u"formLayout")
         self.label_4 = QLabel(self.scrollAreaWidgetContents)
@@ -72,7 +72,7 @@ class Ui_preferenceWindow(object):
         sizePolicy1.setVerticalStretch(0)
         sizePolicy1.setHeightForWidth(self.checkDocPane.sizePolicy().hasHeightForWidth())
         self.checkDocPane.setSizePolicy(sizePolicy1)
-        self.checkDocPane.setLayoutDirection(Qt.RightToLeft)
+        self.checkDocPane.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
 
         self.formLayout.setWidget(0, QFormLayout.ItemRole.FieldRole, self.checkDocPane)
 
@@ -85,7 +85,7 @@ class Ui_preferenceWindow(object):
         self.checkLogPane.setObjectName(u"checkLogPane")
         sizePolicy1.setHeightForWidth(self.checkLogPane.sizePolicy().hasHeightForWidth())
         self.checkLogPane.setSizePolicy(sizePolicy1)
-        self.checkLogPane.setLayoutDirection(Qt.RightToLeft)
+        self.checkLogPane.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
 
         self.formLayout.setWidget(1, QFormLayout.ItemRole.FieldRole, self.checkLogPane)
 
@@ -98,7 +98,7 @@ class Ui_preferenceWindow(object):
         self.checkBoxTest.setObjectName(u"checkBoxTest")
         sizePolicy1.setHeightForWidth(self.checkBoxTest.sizePolicy().hasHeightForWidth())
         self.checkBoxTest.setSizePolicy(sizePolicy1)
-        self.checkBoxTest.setLayoutDirection(Qt.RightToLeft)
+        self.checkBoxTest.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
 
         self.formLayout.setWidget(2, QFormLayout.ItemRole.FieldRole, self.checkBoxTest)
 
@@ -111,7 +111,7 @@ class Ui_preferenceWindow(object):
         self.checkShowTime.setObjectName(u"checkShowTime")
         sizePolicy1.setHeightForWidth(self.checkShowTime.sizePolicy().hasHeightForWidth())
         self.checkShowTime.setSizePolicy(sizePolicy1)
-        self.checkShowTime.setLayoutDirection(Qt.RightToLeft)
+        self.checkShowTime.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
 
         self.formLayout.setWidget(3, QFormLayout.ItemRole.FieldRole, self.checkShowTime)
 
@@ -124,7 +124,7 @@ class Ui_preferenceWindow(object):
         self.checkDblClick.setObjectName(u"checkDblClick")
         sizePolicy1.setHeightForWidth(self.checkDblClick.sizePolicy().hasHeightForWidth())
         self.checkDblClick.setSizePolicy(sizePolicy1)
-        self.checkDblClick.setLayoutDirection(Qt.RightToLeft)
+        self.checkDblClick.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
 
         self.formLayout.setWidget(4, QFormLayout.ItemRole.FieldRole, self.checkDblClick)
 
@@ -160,10 +160,12 @@ class Ui_preferenceWindow(object):
         sizePolicy2.setVerticalStretch(0)
         sizePolicy2.setHeightForWidth(self.scrollArea_2.sizePolicy().hasHeightForWidth())
         self.scrollArea_2.setSizePolicy(sizePolicy2)
+        self.scrollArea_2.setFrameShape(QFrame.Shape.NoFrame)
+        self.scrollArea_2.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
         self.scrollArea_2.setWidgetResizable(True)
         self.scrollAreaWidgetContents_2 = QWidget()
         self.scrollAreaWidgetContents_2.setObjectName(u"scrollAreaWidgetContents_2")
-        self.scrollAreaWidgetContents_2.setGeometry(QRect(0, 0, 555, 141))
+        self.scrollAreaWidgetContents_2.setGeometry(QRect(0, 0, 557, 210))
         sizePolicy3 = QSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Expanding)
         sizePolicy3.setHorizontalStretch(0)
         sizePolicy3.setVerticalStretch(0)
@@ -171,25 +173,10 @@ class Ui_preferenceWindow(object):
         self.scrollAreaWidgetContents_2.setSizePolicy(sizePolicy3)
         self.formLayout_2 = QFormLayout(self.scrollAreaWidgetContents_2)
         self.formLayout_2.setObjectName(u"formLayout_2")
-        self.label = QLabel(self.scrollAreaWidgetContents_2)
-        self.label.setObjectName(u"label")
-        sizePolicy4 = QSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.MinimumExpanding)
-        sizePolicy4.setHorizontalStretch(0)
-        sizePolicy4.setVerticalStretch(0)
-        sizePolicy4.setHeightForWidth(self.label.sizePolicy().hasHeightForWidth())
-        self.label.setSizePolicy(sizePolicy4)
-
-        self.formLayout_2.setWidget(0, QFormLayout.ItemRole.LabelRole, self.label)
-
         self.horizontalLayout = QHBoxLayout()
         self.horizontalLayout.setObjectName(u"horizontalLayout")
         self.editDefaultLogPath = QLineEdit(self.scrollAreaWidgetContents_2)
         self.editDefaultLogPath.setObjectName(u"editDefaultLogPath")
-        sizePolicy5 = QSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Minimum)
-        sizePolicy5.setHorizontalStretch(0)
-        sizePolicy5.setVerticalStretch(0)
-        sizePolicy5.setHeightForWidth(self.editDefaultLogPath.sizePolicy().hasHeightForWidth())
-        self.editDefaultLogPath.setSizePolicy(sizePolicy5)
 
         self.horizontalLayout.addWidget(self.editDefaultLogPath)
 
@@ -199,21 +186,12 @@ class Ui_preferenceWindow(object):
         self.horizontalLayout.addWidget(self.butLogPath)
 
 
-        self.formLayout_2.setLayout(0, QFormLayout.ItemRole.FieldRole, self.horizontalLayout)
-
-        self.label_2 = QLabel(self.scrollAreaWidgetContents_2)
-        self.label_2.setObjectName(u"label_2")
-        sizePolicy4.setHeightForWidth(self.label_2.sizePolicy().hasHeightForWidth())
-        self.label_2.setSizePolicy(sizePolicy4)
-
-        self.formLayout_2.setWidget(1, QFormLayout.ItemRole.LabelRole, self.label_2)
+        self.formLayout_2.setLayout(1, QFormLayout.ItemRole.FieldRole, self.horizontalLayout)
 
         self.horizontalLayout_2 = QHBoxLayout()
         self.horizontalLayout_2.setObjectName(u"horizontalLayout_2")
         self.editDefaultReportPath = QLineEdit(self.scrollAreaWidgetContents_2)
         self.editDefaultReportPath.setObjectName(u"editDefaultReportPath")
-        sizePolicy5.setHeightForWidth(self.editDefaultReportPath.sizePolicy().hasHeightForWidth())
-        self.editDefaultReportPath.setSizePolicy(sizePolicy5)
 
         self.horizontalLayout_2.addWidget(self.editDefaultReportPath)
 
@@ -223,24 +201,79 @@ class Ui_preferenceWindow(object):
         self.horizontalLayout_2.addWidget(self.butReportPath)
 
 
-        self.formLayout_2.setLayout(1, QFormLayout.ItemRole.FieldRole, self.horizontalLayout_2)
+        self.formLayout_2.setLayout(2, QFormLayout.ItemRole.FieldRole, self.horizontalLayout_2)
+
+        self.horizontalLayout_4 = QHBoxLayout()
+        self.horizontalLayout_4.setObjectName(u"horizontalLayout_4")
+        self.checkGitSupported = QCheckBox(self.scrollAreaWidgetContents_2)
+        self.checkGitSupported.setObjectName(u"checkGitSupported")
+        self.checkGitSupported.setLayoutDirection(Qt.LayoutDirection.RightToLeft)
+
+        self.horizontalLayout_4.addWidget(self.checkGitSupported)
+
+
+        self.formLayout_2.setLayout(4, QFormLayout.ItemRole.FieldRole, self.horizontalLayout_4)
+
+        self.horizontalLayout_3 = QHBoxLayout()
+        self.horizontalLayout_3.setObjectName(u"horizontalLayout_3")
+        self.editPythonPath = QLineEdit(self.scrollAreaWidgetContents_2)
+        self.editPythonPath.setObjectName(u"editPythonPath")
+
+        self.horizontalLayout_3.addWidget(self.editPythonPath)
+
+        self.butPythonPath = QToolButton(self.scrollAreaWidgetContents_2)
+        self.butPythonPath.setObjectName(u"butPythonPath")
+
+        self.horizontalLayout_3.addWidget(self.butPythonPath)
+
+
+        self.formLayout_2.setLayout(6, QFormLayout.ItemRole.FieldRole, self.horizontalLayout_3)
+
+        self.label = QLabel(self.scrollAreaWidgetContents_2)
+        self.label.setObjectName(u"label")
+
+        self.formLayout_2.setWidget(1, QFormLayout.ItemRole.LabelRole, self.label)
+
+        self.label_2 = QLabel(self.scrollAreaWidgetContents_2)
+        self.label_2.setObjectName(u"label_2")
+
+        self.formLayout_2.setWidget(2, QFormLayout.ItemRole.LabelRole, self.label_2)
+
+        self.label_11 = QLabel(self.scrollAreaWidgetContents_2)
+        self.label_11.setObjectName(u"label_11")
+
+        self.formLayout_2.setWidget(6, QFormLayout.ItemRole.LabelRole, self.label_11)
 
         self.labelgit = QLabel(self.scrollAreaWidgetContents_2)
         self.labelgit.setObjectName(u"labelgit")
 
-        self.formLayout_2.setWidget(2, QFormLayout.ItemRole.LabelRole, self.labelgit)
+        self.formLayout_2.setWidget(4, QFormLayout.ItemRole.LabelRole, self.labelgit)
 
-        self.checkGitSupported = QCheckBox(self.scrollAreaWidgetContents_2)
-        self.checkGitSupported.setObjectName(u"checkGitSupported")
-        self.checkGitSupported.setLayoutDirection(Qt.RightToLeft)
+        self.horizontalLayout_5 = QHBoxLayout()
+        self.horizontalLayout_5.setObjectName(u"horizontalLayout_5")
+        self.editLuaPath = QLineEdit(self.scrollAreaWidgetContents_2)
+        self.editLuaPath.setObjectName(u"editLuaPath")
 
-        self.formLayout_2.setWidget(2, QFormLayout.ItemRole.FieldRole, self.checkGitSupported)
+        self.horizontalLayout_5.addWidget(self.editLuaPath)
+
+        self.butLuaPath = QToolButton(self.scrollAreaWidgetContents_2)
+        self.butLuaPath.setObjectName(u"butLuaPath")
+
+        self.horizontalLayout_5.addWidget(self.butLuaPath)
+
+
+        self.formLayout_2.setLayout(7, QFormLayout.ItemRole.FieldRole, self.horizontalLayout_5)
+
+        self.label_12 = QLabel(self.scrollAreaWidgetContents_2)
+        self.label_12.setObjectName(u"label_12")
+
+        self.formLayout_2.setWidget(7, QFormLayout.ItemRole.LabelRole, self.label_12)
 
         self.scrollArea_2.setWidget(self.scrollAreaWidgetContents_2)
 
         self.verticalLayout_3.addWidget(self.scrollArea_2)
 
-        self.verticalSpacer_2 = QSpacerItem(20, 40, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Expanding)
+        self.verticalSpacer_2 = QSpacerItem(0, 0, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.MinimumExpanding)
 
         self.verticalLayout_3.addItem(self.verticalSpacer_2)
 
@@ -251,31 +284,36 @@ class Ui_preferenceWindow(object):
         self.verticalLayout_4.setObjectName(u"verticalLayout_4")
         self.scrollArea_3 = QScrollArea(self.tabLog)
         self.scrollArea_3.setObjectName(u"scrollArea_3")
-        sizePolicy5.setHeightForWidth(self.scrollArea_3.sizePolicy().hasHeightForWidth())
-        self.scrollArea_3.setSizePolicy(sizePolicy5)
+        sizePolicy4 = QSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Minimum)
+        sizePolicy4.setHorizontalStretch(0)
+        sizePolicy4.setVerticalStretch(0)
+        sizePolicy4.setHeightForWidth(self.scrollArea_3.sizePolicy().hasHeightForWidth())
+        self.scrollArea_3.setSizePolicy(sizePolicy4)
+        self.scrollArea_3.setFrameShape(QFrame.Shape.NoFrame)
+        self.scrollArea_3.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
         self.scrollArea_3.setWidgetResizable(True)
         self.scrollAreaWidgetContents_3 = QWidget()
         self.scrollAreaWidgetContents_3.setObjectName(u"scrollAreaWidgetContents_3")
-        self.scrollAreaWidgetContents_3.setGeometry(QRect(0, 0, 555, 72))
+        self.scrollAreaWidgetContents_3.setGeometry(QRect(0, 0, 557, 77))
         self.gridLayout = QGridLayout(self.scrollAreaWidgetContents_3)
         self.gridLayout.setObjectName(u"gridLayout")
         self.label_8 = QLabel(self.scrollAreaWidgetContents_3)
         self.label_8.setObjectName(u"label_8")
-        sizePolicy6 = QSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Preferred)
-        sizePolicy6.setHorizontalStretch(0)
-        sizePolicy6.setVerticalStretch(0)
-        sizePolicy6.setHeightForWidth(self.label_8.sizePolicy().hasHeightForWidth())
-        self.label_8.setSizePolicy(sizePolicy6)
+        sizePolicy5 = QSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Preferred)
+        sizePolicy5.setHorizontalStretch(0)
+        sizePolicy5.setVerticalStretch(0)
+        sizePolicy5.setHeightForWidth(self.label_8.sizePolicy().hasHeightForWidth())
+        self.label_8.setSizePolicy(sizePolicy5)
 
         self.gridLayout.addWidget(self.label_8, 0, 0, 1, 1)
 
         self.font_choice = QFontComboBox(self.scrollAreaWidgetContents_3)
         self.font_choice.setObjectName(u"font_choice")
-        sizePolicy7 = QSizePolicy(QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Fixed)
-        sizePolicy7.setHorizontalStretch(0)
-        sizePolicy7.setVerticalStretch(0)
-        sizePolicy7.setHeightForWidth(self.font_choice.sizePolicy().hasHeightForWidth())
-        self.font_choice.setSizePolicy(sizePolicy7)
+        sizePolicy6 = QSizePolicy(QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Fixed)
+        sizePolicy6.setHorizontalStretch(0)
+        sizePolicy6.setVerticalStretch(0)
+        sizePolicy6.setHeightForWidth(self.font_choice.sizePolicy().hasHeightForWidth())
+        self.font_choice.setSizePolicy(sizePolicy6)
 
         self.gridLayout.addWidget(self.font_choice, 0, 1, 1, 1)
 
@@ -305,7 +343,7 @@ class Ui_preferenceWindow(object):
 
         self.buttonBox = QDialogButtonBox(preferenceWindow)
         self.buttonBox.setObjectName(u"buttonBox")
-        self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
+        self.buttonBox.setStandardButtons(QDialogButtonBox.StandardButton.Cancel|QDialogButtonBox.StandardButton.Ok)
 
         self.verticalLayout_2.addWidget(self.buttonBox)
 
@@ -336,12 +374,16 @@ class Ui_preferenceWindow(object):
 
         self.label_10.setText(QCoreApplication.translate("preferenceWindow", u"Icons theme", None))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tabInterfaceParams), QCoreApplication.translate("preferenceWindow", u"Interface parameters", None))
-        self.label.setText(QCoreApplication.translate("preferenceWindow", u"Default log files path", None))
         self.butLogPath.setText(QCoreApplication.translate("preferenceWindow", u"...", None))
-        self.label_2.setText(QCoreApplication.translate("preferenceWindow", u"Default reports path", None))
         self.butReportPath.setText(QCoreApplication.translate("preferenceWindow", u"...", None))
-        self.labelgit.setText(QCoreApplication.translate("preferenceWindow", u"git supported", None))
         self.checkGitSupported.setText("")
+        self.butPythonPath.setText(QCoreApplication.translate("preferenceWindow", u"...", None))
+        self.label.setText(QCoreApplication.translate("preferenceWindow", u"Default log files path", None))
+        self.label_2.setText(QCoreApplication.translate("preferenceWindow", u"Default reports path", None))
+        self.label_11.setText(QCoreApplication.translate("preferenceWindow", u"Python Path", None))
+        self.labelgit.setText(QCoreApplication.translate("preferenceWindow", u"git supported", None))
+        self.butLuaPath.setText(QCoreApplication.translate("preferenceWindow", u"...", None))
+        self.label_12.setText(QCoreApplication.translate("preferenceWindow", u"Lua Path", None))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tabTestParams), QCoreApplication.translate("preferenceWindow", u"Tests parameters", None))
         self.label_8.setText(QCoreApplication.translate("preferenceWindow", u"Font", None))
         self.label_9.setText(QCoreApplication.translate("preferenceWindow", u"Font size", None))
diff --git a/src/testium/main_win/preference_win/preference_core_win.ui b/src/testium/main_win/preference_win/preference_core_win.ui
index 948c9e1..d863d50 100644
--- a/src/testium/main_win/preference_win/preference_core_win.ui
+++ b/src/testium/main_win/preference_win/preference_core_win.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>597</width>
-    <height>386</height>
+    <height>525</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -45,16 +45,16 @@
        <item>
         <widget class="QScrollArea" name="scrollArea">
          <property name="frameShape">
-          <enum>QFrame::NoFrame</enum>
+          <enum>QFrame::Shape::NoFrame</enum>
          </property>
          <property name="frameShadow">
-          <enum>QFrame::Sunken</enum>
+          <enum>QFrame::Shadow::Sunken</enum>
          </property>
          <property name="verticalScrollBarPolicy">
-          <enum>Qt::ScrollBarAlwaysOff</enum>
+          <enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOff</enum>
          </property>
          <property name="horizontalScrollBarPolicy">
-          <enum>Qt::ScrollBarAsNeeded</enum>
+          <enum>Qt::ScrollBarPolicy::ScrollBarAsNeeded</enum>
          </property>
          <property name="widgetResizable">
           <bool>true</bool>
@@ -63,9 +63,9 @@
           <property name="geometry">
            <rect>
             <x>0</x>
-            <y>-9</y>
+            <y>0</y>
             <width>557</width>
-            <height>152</height>
+            <height>210</height>
            </rect>
           </property>
           <layout class="QFormLayout" name="formLayout">
@@ -85,7 +85,7 @@
               </sizepolicy>
              </property>
              <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
+              <enum>Qt::LayoutDirection::RightToLeft</enum>
              </property>
              <property name="text">
               <string/>
@@ -108,7 +108,7 @@
               </sizepolicy>
              </property>
              <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
+              <enum>Qt::LayoutDirection::RightToLeft</enum>
              </property>
              <property name="text">
               <string/>
@@ -131,7 +131,7 @@
               </sizepolicy>
              </property>
              <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
+              <enum>Qt::LayoutDirection::RightToLeft</enum>
              </property>
              <property name="text">
               <string/>
@@ -154,7 +154,7 @@
               </sizepolicy>
              </property>
              <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
+              <enum>Qt::LayoutDirection::RightToLeft</enum>
              </property>
              <property name="text">
               <string/>
@@ -177,7 +177,7 @@
               </sizepolicy>
              </property>
              <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
+              <enum>Qt::LayoutDirection::RightToLeft</enum>
              </property>
              <property name="text">
               <string/>
@@ -215,7 +215,7 @@
        <item>
         <spacer name="verticalSpacer">
          <property name="orientation">
-          <enum>Qt::Vertical</enum>
+          <enum>Qt::Orientation::Vertical</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
@@ -240,6 +240,12 @@
            <verstretch>0</verstretch>
           </sizepolicy>
          </property>
+         <property name="frameShape">
+          <enum>QFrame::Shape::NoFrame</enum>
+         </property>
+         <property name="verticalScrollBarPolicy">
+          <enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOff</enum>
+         </property>
          <property name="widgetResizable">
           <bool>true</bool>
          </property>
@@ -248,8 +254,8 @@
            <rect>
             <x>0</x>
             <y>0</y>
-            <width>555</width>
-            <height>141</height>
+            <width>557</width>
+            <height>210</height>
            </rect>
           </property>
           <property name="sizePolicy">
@@ -259,30 +265,10 @@
            </sizepolicy>
           </property>
           <layout class="QFormLayout" name="formLayout_2">
-           <item row="0" column="0">
-            <widget class="QLabel" name="label">
-             <property name="sizePolicy">
-              <sizepolicy hsizetype="Preferred" vsizetype="MinimumExpanding">
-               <horstretch>0</horstretch>
-               <verstretch>0</verstretch>
-              </sizepolicy>
-             </property>
-             <property name="text">
-              <string>Default log files path</string>
-             </property>
-            </widget>
-           </item>
-           <item row="0" column="1">
+           <item row="1" column="1">
             <layout class="QHBoxLayout" name="horizontalLayout">
              <item>
-              <widget class="QLineEdit" name="editDefaultLogPath">
-               <property name="sizePolicy">
-                <sizepolicy hsizetype="Expanding" vsizetype="Minimum">
-                 <horstretch>0</horstretch>
-                 <verstretch>0</verstretch>
-                </sizepolicy>
-               </property>
-              </widget>
+              <widget class="QLineEdit" name="editDefaultLogPath"/>
              </item>
              <item>
               <widget class="QToolButton" name="butLogPath">
@@ -293,30 +279,10 @@
              </item>
             </layout>
            </item>
-           <item row="1" column="0">
-            <widget class="QLabel" name="label_2">
-             <property name="sizePolicy">
-              <sizepolicy hsizetype="Preferred" vsizetype="MinimumExpanding">
-               <horstretch>0</horstretch>
-               <verstretch>0</verstretch>
-              </sizepolicy>
-             </property>
-             <property name="text">
-              <string>Default reports path</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
+           <item row="2" column="1">
             <layout class="QHBoxLayout" name="horizontalLayout_2">
              <item>
-              <widget class="QLineEdit" name="editDefaultReportPath">
-               <property name="sizePolicy">
-                <sizepolicy hsizetype="Expanding" vsizetype="Minimum">
-                 <horstretch>0</horstretch>
-                 <verstretch>0</verstretch>
-                </sizepolicy>
-               </property>
-              </widget>
+              <widget class="QLineEdit" name="editDefaultReportPath"/>
              </item>
              <item>
               <widget class="QToolButton" name="butReportPath">
@@ -327,20 +293,80 @@
              </item>
             </layout>
            </item>
+           <item row="4" column="1">
+            <layout class="QHBoxLayout" name="horizontalLayout_4">
+             <item>
+              <widget class="QCheckBox" name="checkGitSupported">
+               <property name="layoutDirection">
+                <enum>Qt::LayoutDirection::RightToLeft</enum>
+               </property>
+               <property name="text">
+                <string/>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item row="6" column="1">
+            <layout class="QHBoxLayout" name="horizontalLayout_3">
+             <item>
+              <widget class="QLineEdit" name="editPythonPath"/>
+             </item>
+             <item>
+              <widget class="QToolButton" name="butPythonPath">
+               <property name="text">
+                <string>...</string>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item row="1" column="0">
+            <widget class="QLabel" name="label">
+             <property name="text">
+              <string>Default log files path</string>
+             </property>
+            </widget>
+           </item>
            <item row="2" column="0">
+            <widget class="QLabel" name="label_2">
+             <property name="text">
+              <string>Default reports path</string>
+             </property>
+            </widget>
+           </item>
+           <item row="6" column="0">
+            <widget class="QLabel" name="label_11">
+             <property name="text">
+              <string>Python Path</string>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="0">
             <widget class="QLabel" name="labelgit">
              <property name="text">
               <string>git supported</string>
              </property>
             </widget>
            </item>
-           <item row="2" column="1">
-            <widget class="QCheckBox" name="checkGitSupported">
-             <property name="layoutDirection">
-              <enum>Qt::RightToLeft</enum>
-             </property>
+           <item row="7" column="1">
+            <layout class="QHBoxLayout" name="horizontalLayout_5">
+             <item>
+              <widget class="QLineEdit" name="editLuaPath"/>
+             </item>
+             <item>
+              <widget class="QToolButton" name="butLuaPath">
+               <property name="text">
+                <string>...</string>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item row="7" column="0">
+            <widget class="QLabel" name="label_12">
              <property name="text">
-              <string/>
+              <string>Lua Path</string>
              </property>
             </widget>
            </item>
@@ -351,12 +377,15 @@
        <item>
         <spacer name="verticalSpacer_2">
          <property name="orientation">
-          <enum>Qt::Vertical</enum>
+          <enum>Qt::Orientation::Vertical</enum>
+         </property>
+         <property name="sizeType">
+          <enum>QSizePolicy::Policy::MinimumExpanding</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
-           <width>20</width>
-           <height>40</height>
+           <width>0</width>
+           <height>0</height>
           </size>
          </property>
         </spacer>
@@ -376,6 +405,12 @@
            <verstretch>0</verstretch>
           </sizepolicy>
          </property>
+         <property name="frameShape">
+          <enum>QFrame::Shape::NoFrame</enum>
+         </property>
+         <property name="verticalScrollBarPolicy">
+          <enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOff</enum>
+         </property>
          <property name="widgetResizable">
           <bool>true</bool>
          </property>
@@ -384,8 +419,8 @@
            <rect>
             <x>0</x>
             <y>0</y>
-            <width>555</width>
-            <height>72</height>
+            <width>557</width>
+            <height>77</height>
            </rect>
           </property>
           <layout class="QGridLayout" name="gridLayout">
@@ -436,10 +471,10 @@
        <item>
         <spacer name="verticalSpacer_3">
          <property name="orientation">
-          <enum>Qt::Vertical</enum>
+          <enum>Qt::Orientation::Vertical</enum>
          </property>
          <property name="sizeType">
-          <enum>QSizePolicy::Expanding</enum>
+          <enum>QSizePolicy::Policy::Expanding</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
@@ -456,7 +491,7 @@
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="standardButtons">
-      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+      <set>QDialogButtonBox::StandardButton::Cancel|QDialogButtonBox::StandardButton::Ok</set>
      </property>
     </widget>
    </item>
diff --git a/src/testium/main_win/preference_win/preference_win.py b/src/testium/main_win/preference_win/preference_win.py
index 81598b2..bb5c89a 100644
--- a/src/testium/main_win/preference_win/preference_win.py
+++ b/src/testium/main_win/preference_win/preference_win.py
@@ -1,161 +1,177 @@
-
-from PySide6.QtCore import (Slot, Qt)
-from PySide6.QtWidgets import (QDialog, QFileDialog)
-from PySide6.QtGui import (QFont)
+from PySide6.QtCore import Slot, Qt
+from PySide6.QtWidgets import QDialog, QFileDialog
+from PySide6.QtGui import QFont
 
 from main_win.preference_win.preference_core_win import Ui_preferenceWindow
 
 import interpreter.utils.settings as prefs
 
+
 class PrefWindow(QDialog):
     def __init__(self, parent=None):
         super().__init__(parent)
         self.ui = Ui_preferenceWindow()
         self.ui.setupUi(self)
-        self.setModal = (True)
+        self.setModal = True
         self.ui.buttonBox.accepted.connect(self.on_buttOKPressed)
         self.ui.buttonBox.rejected.connect(self.on_buttCancelPressed)
         self.finished.connect(self.on_finishedPressed)
         self.ui.butLogPath.triggered.connect(self.on_butLogPath_pressed)
         self.ui.butReportPath.triggered.connect(self.on_butReportPath_pressed)
+        self.ui.butPythonPath.triggered.connect(self.on_butPythonPath_pressed)
+        self.ui.butLuaPath.triggered.connect(self.on_butLuaPath_pressed)
         self.elements = {
             prefs.settings.SettingsHideDocPane: {
-                'type': 'bool',
-                'widget': self.ui.checkDocPane,
-                'value': prefs.settings.hide_doc_pane,
-                'default': False,
-                'changed': False,
+                "type": "bool",
+                "widget": self.ui.checkDocPane,
+                "value": prefs.settings.hide_doc_pane,
+                "default": False,
+                "changed": False,
             },
             prefs.settings.SettingsHideLogPane: {
-                'type':  'bool',
-                'widget': self.ui.checkLogPane,
-                'value': prefs.settings.hide_log_pane,
-                'default': False,
-                'changed': False,
+                "type": "bool",
+                "widget": self.ui.checkLogPane,
+                "value": prefs.settings.hide_log_pane,
+                "default": False,
+                "changed": False,
             },
             prefs.settings.SettingsShowCheckboxes: {
-                'type':  'bool',
-                'widget': self.ui.checkBoxTest,
-                'value': prefs.settings.show_checkboxes,
-                'default': False,
-                'changed': False,
+                "type": "bool",
+                "widget": self.ui.checkBoxTest,
+                "value": prefs.settings.show_checkboxes,
+                "default": False,
+                "changed": False,
             },
             prefs.settings.SettingsShowTimeColumn: {
-                'type':  'bool',
-                'widget': self.ui.checkShowTime,
-                'value': prefs.settings.show_time_column,
-                'default': False,
-                'changed': False,
+                "type": "bool",
+                "widget": self.ui.checkShowTime,
+                "value": prefs.settings.show_time_column,
+                "default": False,
+                "changed": False,
             },
             prefs.settings.SettingsLogPath: {
-                'type':  'text',
-                'widget': self.ui.editDefaultLogPath,
-                'value': prefs.settings.log_path,
-                'default': '$(test_directory)',
-                'changed': False,
+                "type": "text",
+                "widget": self.ui.editDefaultLogPath,
+                "value": prefs.settings.log_path,
+                "default": "$(test_directory)",
+                "changed": False,
             },
             prefs.settings.SettingsReportPath: {
-                'type' : 'text',
-                'widget': self.ui.editDefaultReportPath,
-                'value': prefs.settings.report_path,
-                'default': '$(test_directory)',
-                'changed': False,
+                "type": "text",
+                "widget": self.ui.editDefaultReportPath,
+                "value": prefs.settings.report_path,
+                "default": "$(test_directory)",
+                "changed": False,
             },
             prefs.settings.SettingsDblClickEnabled: {
-                'type' : 'bool',
-                'widget': self.ui.checkDblClick,
-                'value': prefs.settings.dbl_click_enabled,
-                'default': False,
-                'changed': False,
+                "type": "bool",
+                "widget": self.ui.checkDblClick,
+                "value": prefs.settings.dbl_click_enabled,
+                "default": False,
+                "changed": False,
             },
             prefs.settings.SettingsIconsTheme: {
-                'type' : 'combo',
-                'widget': self.ui.choiceIconsTheme,
-                'value': prefs.settings.icons_theme,
-                'default': 0,
-                'changed': False,
+                "type": "combo",
+                "widget": self.ui.choiceIconsTheme,
+                "value": prefs.settings.icons_theme,
+                "default": 0,
+                "changed": False,
             },
             prefs.settings.SettingsLogFont: {
-                'type' : 'font',
-                'widget': self.ui.font_choice,
-                'value': prefs.settings.log_font,
-                'default': 'Monospace',
-                'changed': False,
+                "type": "font",
+                "widget": self.ui.font_choice,
+                "value": prefs.settings.log_font,
+                "default": "Monospace",
+                "changed": False,
             },
             prefs.settings.SettingsLogFontSize: {
-                'type' : 'int',
-                'widget': self.ui.font_size,
-                'value': prefs.settings.log_font_size,
-                'default': 8,
-                'changed': False,
+                "type": "int",
+                "widget": self.ui.font_size,
+                "value": prefs.settings.log_font_size,
+                "default": 8,
+                "changed": False,
             },
             prefs.settings.SettingsGitSupported: {
-                'type' : 'bool',
-                'widget': self.ui.checkGitSupported,
-                'value': prefs.settings.git_supported,
-                'default': True,
-                'changed': False,
-            }
+                "type": "bool",
+                "widget": self.ui.checkGitSupported,
+                "value": prefs.settings.git_supported,
+                "default": True,
+                "changed": False,
+            },
+            prefs.settings.SettingsPythonPath: {
+                "type": "text",
+                "widget": self.ui.editPythonPath,
+                "value": prefs.settings.python_path,
+                "default": "",
+                "changed": False,
+            },
+            prefs.settings.SettingsLuaPath: {
+                "type": "text",
+                "widget": self.ui.editLuaPath,
+                "value": prefs.settings.lua_path,
+                "default": "",
+                "changed": False,
+            },
         }
 
         self.restore_prefs()
 
     def store_prefs(self):
         for k, v in self.elements.items():
-            self.elements[k]['changed'] = False
-            if v['type'] == 'bool':
-                val = v['widget'].isChecked()
-                if self.elements[k]['value'] != val:
-                    self.elements[k]['value'] = val
-                    self.elements[k]['changed'] = True
+            self.elements[k]["changed"] = False
+            if v["type"] == "bool":
+                val = v["widget"].isChecked()
+                if self.elements[k]["value"] != val:
+                    self.elements[k]["value"] = val
+                    self.elements[k]["changed"] = True
 
-            if v['type'] == 'text':
-                val = v['widget'].text()
-                if self.elements[k]['value'] != val:
-                    self.elements[k]['value'] = val
-                    self.elements[k]['changed'] = True
+            if v["type"] == "text":
+                val = v["widget"].text()
+                if self.elements[k]["value"] != val:
+                    self.elements[k]["value"] = val
+                    self.elements[k]["changed"] = True
 
-            if v['type'] == 'font':
-                val = v['widget'].currentFont().toString()
-                if self.elements[k]['value'] != val:
-                    self.elements[k]['value'] = val
-                    self.elements[k]['changed'] = True
+            if v["type"] == "font":
+                val = v["widget"].currentFont().toString()
+                if self.elements[k]["value"] != val:
+                    self.elements[k]["value"] = val
+                    self.elements[k]["changed"] = True
 
-            if v['type'] == 'int':
-                val = int(v['widget'].value())
-                if self.elements[k]['value'] != val:
-                    self.elements[k]['value'] = val
-                    self.elements[k]['changed'] = True
+            if v["type"] == "int":
+                val = int(v["widget"].value())
+                if self.elements[k]["value"] != val:
+                    self.elements[k]["value"] = val
+                    self.elements[k]["changed"] = True
 
-            if v['type'] == 'combo':
-                val = int(v['widget'].currentIndex())
-                if self.elements[k]['value'] != val:
-                    self.elements[k]['value'] = val
-                    self.elements[k]['changed'] = True
+            if v["type"] == "combo":
+                val = int(v["widget"].currentIndex())
+                if self.elements[k]["value"] != val:
+                    self.elements[k]["value"] = val
+                    self.elements[k]["changed"] = True
 
-            if self.elements[k]['changed']:
-                prefs.settings.set_value(k, v['value'])
+            if self.elements[k]["changed"]:
+                prefs.settings.set_value(k, v["value"])
 
         prefs.settings.sync()
 
     def restore_prefs(self):
         for k, v in self.elements.items():
-            v['value'] = prefs.settings.value(k, v['default'])
-            if v['type'] == 'bool':
-                v['widget'].setChecked(v['value'])
-            elif v['type'] == 'text':
-                v['widget'].setText(self.elements[k]['value'])
-            elif v['type'] == 'font':
+            v["value"] = prefs.settings.value(k, v["default"])
+            if v["type"] == "bool":
+                v["widget"].setChecked(v["value"])
+            elif v["type"] == "text":
+                v["widget"].setText(self.elements[k]["value"])
+            elif v["type"] == "font":
                 f = QFont()
-                f.fromString(self.elements[k]['value'])
-                v['widget'].setCurrentFont(f)
-            elif v['type'] == 'int':
-                v['widget'].setValue(self.elements[k]['value'])
-            elif v['type'] == 'combo':
-                v['widget'].setCurrentIndex(self.elements[k]['value'])
+                f.fromString(self.elements[k]["value"])
+                v["widget"].setCurrentFont(f)
+            elif v["type"] == "int":
+                v["widget"].setValue(self.elements[k]["value"])
+            elif v["type"] == "combo":
+                v["widget"].setCurrentIndex(self.elements[k]["value"])
 
     def isChanged(self, setting):
-        return self.elements[setting]['changed']
+        return self.elements[setting]["changed"]
 
     @Slot()
     def on_buttOKPressed(self):
@@ -173,14 +189,38 @@ class PrefWindow(QDialog):
 
     @Slot()
     def on_butReportPath_pressed(self):
-        path = QFileDialog.getExistingDirectory(self, "Select the default report directory",
-                                                  self.ui.editDefaultReportPath.text())
+        path = QFileDialog.getExistingDirectory(
+            self,
+            caption="Select the default report directory",
+            dir=self.ui.editDefaultReportPath.text(),
+        )
         if path:
             self.ui.editDefaultReportPath.setText(path)
 
     @Slot()
     def on_butLogPath_pressed(self):
-        path = QFileDialog.getExistingDirectory(self, "Select the default log directory",
-                                                  self.ui.editDefaultLogPath.text())
+        path = QFileDialog.getExistingDirectory(
+            self,
+            caption="Select the default log directory",
+            dir=self.ui.editDefaultLogPath.text(),
+        )
         if path:
             self.ui.editDefaultLogPath.setText(path)
+
+    @Slot()
+    def on_butPythonPath_pressed(self):
+        path, _ = QFileDialog.getOpenFileName(
+            self,
+            caption="Select the python interpreter",
+            dir=self.ui.editPythonPath.text(),
+        )
+        if path:
+            self.ui.editPythonPath.setText(path)
+
+    @Slot()
+    def on_butLuaPath_pressed(self):
+        path, _ = QFileDialog.getOpenFileName(
+            self, caption="Select the lua interpreter", dir=self.ui.editLuaPath.text()
+        )
+        if path:
+            self.ui.editLuaPath.setText(path)
diff --git a/src/testium/main_win/test_run/test_run.py b/src/testium/main_win/test_run/test_run.py
index 6acafc8..9ad0480 100644
--- a/src/testium/main_win/test_run/test_run.py
+++ b/src/testium/main_win/test_run/test_run.py
@@ -2,41 +2,6 @@ from time import sleep
 import importlib
 from PySide6.QtCore import (Signal, QThread)
 
-# class ThreadTestRun(QThread):
-
-#     def __init__(
-#         self,
-#         test_proc: TestProcess,
-#         status_thread,
-#         tst_ctrl: TestSetController,
-#         debug=False,
-#     ):
-#         super().__init__(None)
-#         self._test_proc = test_proc
-#         self._tst_ctrl = tst_ctrl
-#         self._debug = debug
-#         self._status_thread = status_thread
-#         if debug:
-#             self.debugpy = importlib.import_module("debugpy")
-
-#     def run(self):
-#         if self._debug:
-#             self.debugpy.debug_this_thread()
-
-#         # start tests
-#         try:
-#             self._test_set.execute()
-#         except:
-#             print(traceback.format_exc())
-#             # raise
-#         self._status_thread.stop()
-#         if self._status_thread.isRunning():
-#             self._status_thread.wait()
-
-#     def stop(self):
-#         if self.isRunning():
-#             self._tst_ctrl.control("stop")
-
 
 class ThreadTestStatus(QThread):
     statusToBeUpdated = Signal(dict)
diff --git a/src/testium/main_win/testium_win.py b/src/testium/main_win/testium_win.py
index 5b15f38..58b5cc0 100755
--- a/src/testium/main_win/testium_win.py
+++ b/src/testium/main_win/testium_win.py
@@ -974,6 +974,19 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         else:
             return fullFileName
 
+    def defaults_for_process(self):
+        d = {}
+
+        pp = prefs.settings.python_path
+        if pp != "":
+            d["python_path"] = pp
+
+        pp = prefs.settings.lua_path
+        if pp != "":
+            d["lua_path"] = pp
+
+        return d
+
     def loadTestSetFile(self, file_name):
         """Load the tests:
         return True if it succeeds, False otherwise.
@@ -998,6 +1011,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
                 self.ts_controller,
                 self.config_files,
                 self.defines,
+                self.defaults_for_process(),
             )
             self.test_proc.start()
             while self.test_proc.is_alive():