diff --git a/CHANGELOG.md b/CHANGELOG.md
index 402ef275..3d1f9004 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ CHANGELOG for FlatCAM Evo beta
 - fixed preprocessors issue where the start GCode was not added due of trying to access an object that did not exist (because its name was not changed to reflect the changes in other parts on the app)
 - updated the requirements.txt file
 - added qdarktheme package into the code
+- upgraded code so the app will work with Python 3.12
 
 27.09.2023
 
diff --git a/appGUI/GUIElements.py b/appGUI/GUIElements.py
index bc42ca5c..58712ab5 100644
--- a/appGUI/GUIElements.py
+++ b/appGUI/GUIElements.py
@@ -999,7 +999,7 @@ class NumericalEvalEntry(FCEntry):
     def __init__(self, border_color=None):
         super().__init__(border_color=border_color)
 
-        regex = QtCore.QRegularExpression("[0-9\/\*\+\-\%\.\,\s]*")
+        regex = QtCore.QRegularExpression(r"[0-9\/\*\+\-\%\.\,\s]*")
         validator = QtGui.QRegularExpressionValidator(regex, self)
         self.setValidator(validator)
 
@@ -1023,7 +1023,7 @@ class NumericalEvalTupleEntry(EvalEntry):
     def __init__(self, border_color=None):
         super().__init__(border_color=border_color)
 
-        regex = QtCore.QRegularExpression("[0-9\/\*\+\-\%\.\s\,\[\]\(\)]*")
+        regex = QtCore.QRegularExpression(r"[0-9\/\*\+\-\%\.\s\,\[\]\(\)]*")
         validator = QtGui.QRegularExpressionValidator(regex, self)
         self.setValidator(validator)
 
@@ -1053,7 +1053,7 @@ class FCColorEntry(QtWidgets.QFrame):
         super().__init__(**kwargs)
 
         self.entry = FCEntry()
-        regex = QtCore.QRegularExpression("[#A-Fa-f0-9]*")
+        regex = QtCore.QRegularExpression(r"[#A-Fa-f0-9]*")
         validator = QtGui.QRegularExpressionValidator(regex, self.entry)
         self.entry.setValidator(validator)
 
@@ -1453,7 +1453,7 @@ class FCDoubleSpinner(QtWidgets.QDoubleSpinBox):
         # by default don't allow the minus sign to be entered as the default for QDoubleSpinBox is the positive range
         # between 0.00 and 99.00 (2 decimals)
         validator = QtGui.QRegularExpressionValidator(
-            QtCore.QRegularExpression("\+?[0-9]*[.,]?[0-9]{%d}" % self.decimals()), self)
+            QtCore.QRegularExpression(r"\+?[0-9]*[.,]?[0-9]" + "{%d}" % self.decimals()), self)
         self.lineEdit().setValidator(validator)
 
         if suffix:
@@ -1664,17 +1664,17 @@ class FCDoubleSpinner(QtWidgets.QDoubleSpinBox):
         if self.minimum() < 0 or self.maximum() <= 0:
             self.lineEdit().setValidator(
                 QtGui.QRegularExpressionValidator(
-                    QtCore.QRegularExpression("-?[0-9]*[.,]?[0-9]{%d}" % self.decimals()), self))
+                    QtCore.QRegularExpression(r"-?[0-9]*[.,]?[0-9]" + "{%d}" % self.decimals()), self))
         else:
             self.lineEdit().setValidator(
                 QtGui.QRegularExpressionValidator(
-                    QtCore.QRegularExpression("\+?[0-9]*[.,]?[0-9]{%d}" % self.decimals()), self))
+                    QtCore.QRegularExpression(r"\+?[0-9]*[.,]?[0-9]" + "{%d}" % self.decimals()), self))
 
     def set_range(self, min_val, max_val):
         if min_val < 0 or max_val <= 0:
             self.lineEdit().setValidator(
                 QtGui.QRegularExpressionValidator(
-                    QtCore.QRegularExpression("-?[0-9]*[.,]?[0-9]{%d}" % self.decimals()), self))
+                    QtCore.QRegularExpression(r"-?[0-9]*[.,]?[0-9]" + "{%d}" % self.decimals()), self))
 
         self.setRange(min_val, max_val)
 
@@ -5202,7 +5202,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     # comment
                     color = self.get_custom_color(QtGui.QColor(Qt.GlobalColor.gray))
                     brush = QtGui.QBrush(color, Qt.BrushStyle.SolidPattern)
-                    pattern = QtCore.QRegularExpression("\(.*\)")
+                    pattern = QtCore.QRegularExpression(r"\(.*\)")
                     comment.setForeground(brush)
                     rule = (pattern, comment)
                     self.highlightingRules.append(rule)
@@ -5210,7 +5210,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     # Marlin comment
                     color = self.get_custom_color(QtGui.QColor(Qt.GlobalColor.gray))
                     brush = QtGui.QBrush(color, Qt.BrushStyle.SolidPattern)
-                    pattern = QtCore.QRegularExpression("^;\s*.*$")
+                    pattern = QtCore.QRegularExpression(r"^;\s*.*$")
                     comment.setForeground(brush)
                     rule = (pattern, comment)
                     self.highlightingRules.append(rule)
@@ -5218,7 +5218,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     # Python comment
                     color = self.get_custom_color(QtGui.QColor(Qt.GlobalColor.gray))
                     brush = QtGui.QBrush(color, Qt.BrushStyle.SolidPattern)
-                    pattern = QtCore.QRegularExpression("^\#\s*.*$")
+                    pattern = QtCore.QRegularExpression(r"^\#\s*.*$")
                     comment.setForeground(brush)
                     rule = (pattern, comment)
                     self.highlightingRules.append(rule)
@@ -5226,7 +5226,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     # string
                     color = self.get_custom_color(QtGui.QColor("tomato"))
                     brush = QtGui.QBrush(color, Qt.BrushStyle.SolidPattern)
-                    pattern = QtCore.QRegularExpression("\".*\"")
+                    pattern = QtCore.QRegularExpression(r"\".*\"")
                     # pattern.setMinimal
                     pattern.setPatternOptions(QtCore.QRegularExpression.PatternOption.InvertedGreedinessOption)
                     string.setForeground(brush)
@@ -5234,7 +5234,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     self.highlightingRules.append(rule)
 
                     # singleQuotedString
-                    pattern = QtCore.QRegularExpression("\'.*\'")
+                    pattern = QtCore.QRegularExpression(r"\'.*\'")
                     # pattern.setMinimal(True)
                     pattern.setPatternOptions(QtCore.QRegularExpression.PatternOption.InvertedGreedinessOption)
 
@@ -5251,7 +5251,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["G", "T"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\d+(\.\d*)?\s?" + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\d+(\.\d*)?\s?" + r"\\b")
                         rule = (pattern, keyword)
                         self.highlightingRules.append(rule)
 
@@ -5264,7 +5264,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["F"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\d+(\.\d*)?\s?" + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\d+(\.\d*)?\s?" + r"\\b")
                         rule = (pattern, keyword1)
                         self.highlightingRules.append(rule)
 
@@ -5278,7 +5278,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["M"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\d+(\.\d*)?\s?" + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\d+(\.\d*)?\s?" + r"\\b")
                         rule = (pattern, keyword2)
                         self.highlightingRules.append(rule)
 
@@ -5292,7 +5292,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["Z"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\\b" + word + "[\-|\+]?\d+(\.\d*)?\s?" + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"[\-|\+]?\d+(\.\d*)?\s?" + r"\\b")
                         rule = (pattern, keyword3)
                         self.highlightingRules.append(rule)
 
@@ -5305,7 +5305,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["LPC", "LPD"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\%" + "\\b" + word + "\*\%")
+                        pattern = QtCore.QRegularExpression(r"\%" + r"\\b" + word + r"\*\%")
                         rule = (pattern, keyword4)
                         self.highlightingRules.append(rule)
 
@@ -5319,7 +5319,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     keywords = ["D"]
                     for word in keywords:
                         # pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\d+\s?")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\d+\s?")
                         rule = (pattern, keyword5)
                         self.highlightingRules.append(rule)
 
@@ -5332,21 +5332,21 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                         "elif", "else", "in", "while", "do"
                     ]
                     for word in keywords:
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\\b")
                         rule = (pattern, reservedClasses)
                         self.highlightingRules.append(rule)
 
                     # parameter
                     color = self.get_custom_color(QtGui.QColor(Qt.GlobalColor.darkBlue))
                     brush = QtGui.QBrush(color, Qt.BrushStyle.SolidPattern)
-                    pattern = QtCore.QRegularExpression("\-[0-9a-zA-Z_]*\s")
+                    pattern = QtCore.QRegularExpression(r"\-[0-9a-zA-Z_]*\s")
                     parameterOperator.setForeground(brush)
                     parameterOperator.setFontWeight(QtGui.QFont.Weight.Bold)
                     rule = (pattern, parameterOperator)
                     self.highlightingRules.append(rule)
 
                     # delimiter
-                    pattern = QtCore.QRegularExpression("[\)\(]+|[\{\}]+|[][]+")
+                    pattern = QtCore.QRegularExpression(r"[\)\(]+|[\{\}]+|[][]+")
                     delimiter.setForeground(brush)
                     delimiter.setFontWeight(QtGui.QFont.Weight.Bold)
                     rule = (pattern, delimiter)
@@ -5358,7 +5358,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     specialConstant.setForeground(brush)
                     keywords = ["Inf", "NA", "NaN", "NULL"]
                     for word in keywords:
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\\b")
                         rule = (pattern, specialConstant)
                         self.highlightingRules.append(rule)
 
@@ -5366,7 +5366,7 @@ class FCTextAreaLineNumber(QtWidgets.QFrame):
                     boolean.setForeground(brush)
                     keywords = ["TRUE", "True", "FALSE", "False"]
                     for word in keywords:
-                        pattern = QtCore.QRegularExpression("\\b" + word + "\\b")
+                        pattern = QtCore.QRegularExpression(r"\\b" + word + r"\\b")
                         rule = (pattern, boolean)
                         self.highlightingRules.append(rule)
 
diff --git a/tclCommands/__init__.py b/tclCommands/__init__.py
index 23f65da3..928e4642 100644
--- a/tclCommands/__init__.py
+++ b/tclCommands/__init__.py
@@ -1,4 +1,6 @@
+
 import pkgutil
+import importlib
 import sys
 
 # allowed command modules (please append them alphabetically ordered)
@@ -79,8 +81,12 @@ import tclCommands.TclCommandWriteGCode
 
 __all__ = []
 
+# for loader, name, is_pkg in pkgutil.walk_packages(__path__):
+#     module = loader.find_module(name).load_module(name)
+#     __all__.append(name)
+
 for loader, name, is_pkg in pkgutil.walk_packages(__path__):
-    module = loader.find_module(name).load_module(name)
+    module = importlib.import_module(f"{__name__}.{name}")
     __all__.append(name)