diff --git a/MethodicConfigurator/frontend_tkinter_parameter_editor_table.py b/MethodicConfigurator/frontend_tkinter_parameter_editor_table.py
index 54b617f..6696a12 100644
--- a/MethodicConfigurator/frontend_tkinter_parameter_editor_table.py
+++ b/MethodicConfigurator/frontend_tkinter_parameter_editor_table.py
@@ -155,25 +155,26 @@ def __create_new_value_entry(self, param_name, param,  # pylint: disable=too-man
 
         present_as_forced = False
         if file_info and 'forced_parameters' in file_info and param_name in file_info['forced_parameters']:
-            present_as_forced = True
-            if "New Value" in file_info['forced_parameters'][param_name] and \
-               param.value != file_info['forced_parameters'][param_name]["New Value"]:
-                param.value = file_info['forced_parameters'][param_name]["New Value"]
-                self.at_least_one_param_edited = True
+            if "New Value" in file_info['forced_parameters'][param_name]:
+                present_as_forced = True
+                if param.value != file_info['forced_parameters'][param_name]["New Value"]:
+                    param.value = file_info['forced_parameters'][param_name]["New Value"]
+                    self.at_least_one_param_edited = True
         if file_info and 'derived_parameters' in file_info and param_name in file_info['derived_parameters']:
-            present_as_forced = True
             if "New Value" in file_info['derived_parameters'][param_name]:
-                # Prepare a dictionary that maps variable names to their values
-                local_vars = {
-                    'vehicle_components': self.local_filesystem.vehicle_components['Components'],
-                    'fc_parameters': self.local_filesystem.file_parameters[self.current_file],
-                    # Add any other variables you want to make accessible within the eval expression
-                }
-                eval_result = eval(file_info['derived_parameters'][param_name]["New Value"],  # pylint: disable=eval-used
-                                   {}, local_vars)
-                if param.value != eval_result:
-                    param.value = eval_result
-                    self.at_least_one_param_edited = True
+                if 'Components' in self.local_filesystem.vehicle_components:
+                    present_as_forced = True
+                    # Prepare a dictionary that maps variable names to their values
+                    local_vars = {
+                        'vehicle_components': self.local_filesystem.vehicle_components['Components'],
+                        'fc_parameters': self.local_filesystem.file_parameters[self.current_file],
+                        # Add any other variables you want to make accessible within the eval expression
+                    }
+                    eval_result = eval(file_info['derived_parameters'][param_name]["New Value"],  # pylint: disable=eval-used
+                                    {}, local_vars)
+                    if param.value != eval_result:
+                        param.value = eval_result
+                        self.at_least_one_param_edited = True
 
         new_value_entry = tk.Entry(self.view_port, width=10, justify=tk.RIGHT)
         ParameterEditorTable.__update_new_value_entry_text(new_value_entry, param.value, param_default)
@@ -274,17 +275,17 @@ def __create_change_reason_entry(self, param_name, param, new_value_entry, file_
 
         present_as_forced = False
         if file_info and 'forced_parameters' in file_info and param_name in file_info['forced_parameters']:
-            present_as_forced = True
-            if "Change Reason" in file_info['forced_parameters'][param_name] and \
-               param.comment != file_info['forced_parameters'][param_name]["Change Reason"]:
-                param.comment = file_info['forced_parameters'][param_name]["Change Reason"]
-                self.at_least_one_param_edited = True
+            if "Change Reason" in file_info['forced_parameters'][param_name]:
+                present_as_forced = True
+                if param.comment != file_info['forced_parameters'][param_name]["Change Reason"]:
+                    param.comment = file_info['forced_parameters'][param_name]["Change Reason"]
+                    self.at_least_one_param_edited = True
         if file_info and 'derived_parameters' in file_info and param_name in file_info['derived_parameters']:
-            present_as_forced = True
-            if "Change Reason" in file_info['derived_parameters'][param_name] and \
-               param.comment != file_info['derived_parameters'][param_name]["Change Reason"]:
-                param.comment = file_info['derived_parameters'][param_name]["Change Reason"]
-                self.at_least_one_param_edited = True
+            if "Change Reason" in file_info['derived_parameters'][param_name]:
+                present_as_forced = True
+                if param.comment != file_info['derived_parameters'][param_name]["Change Reason"]:
+                    param.comment = file_info['derived_parameters'][param_name]["Change Reason"]
+                    self.at_least_one_param_edited = True
 
         change_reason_entry = tk.Entry(self.view_port, background="white")
         change_reason_entry.insert(0, "" if param.comment is None else param.comment)