File "lib/doodleDelegate.pyc", line 89, in sendEvent_
File "/Applications/RoboFont_4.4_release.app/Contents/Resources/lib/python3.9/vanilla/vanillaBase.py", line 520, in action_
File "/Users/erik/Library/Application Support/RoboFont/plugins/DesignspaceEditor2.roboFontExt/lib/designspaceEditor/ui.py", line 1694, in toolbarSave
File "/Users/erik/Library/Application Support/RoboFont/plugins/DesignspaceEditor2.roboFontExt/lib/designspaceEditor/ui.py", line 1648, in saveDesignspace
File "/Users/erik/Library/Application Support/RoboFont/plugins/DesignspaceEditor2.roboFontExt/lib/designspaceEditor/ui.py", line 1097, in unwrapSourceDescriptor
File "objc/_convenience_mapping.pyc", line 18, in __getitem__objectForKey_
File "objc/_convenience.pyc", line 134, in container_unwrap
KeyError: 'sourceFamilyName'