- added a way to keep compatibility with old projects

appObjects/AppObject.py

@@ -138,13 +138,15 @@ class AppObject(QtCore.QObject):
         # add some of the FlatCAM Tools related properties
         if kind == 'excellon':
             for option in self.app.options:
-                if option.find('tools_drill_') == 0 or option.find('tools_mill_') == 0:
+                if option.find('tools_drill_') == 0:
                     obj.options[option] = self.app.options[option]
         if kind == 'gerber':
             for option in self.app.options:
-                if option.find('tools_iso_') == 0 or option.find('tools_mill_') == 0:
+                if option.find('tools_iso_') == 0:
                     obj.options[option] = self.app.options[option]
-        if kind == 'geometry':
+
+        # the milling options should be inherited by all manufacturing objects
+        if kind in ['excellon', 'gerber', 'geometry']:
             for option in self.app.options:
                 if option.find('tools_mill_') == 0:
                     obj.options[option] = self.app.options[option]

appObjects/FlatCAMCNCJob.py

@@ -2230,9 +2230,15 @@ class CNCJobObject(FlatCAMObj, CNCjob):
         # if this dict is not empty then the object is an Excellon object
         if self.exc_cnc_tools:
             first_key = next(iter(self.exc_cnc_tools))
-            include_header = self.app.preprocessors[
-                self.exc_cnc_tools[first_key]['data']['tools_drill_ppname_e']
-            ].include_header
+            try:
+                include_header = self.app.preprocessors[
+                    self.exc_cnc_tools[first_key]['data']['tools_drill_ppname_e']
+                ].include_header
+            except KeyError:
+                # for older loaded projects
+                include_header = self.app.preprocessors[
+                    self.exc_cnc_tools[first_key]['data']['ppname_e']
+                ].include_header
 
         gcode = ''
         if include_header is False: