Hey adp001, is it possible that you packaged an outdated Run.py with the latest version? It's trying to read the IsChecked property of a CheckboxCtrl, which only has IsSelected. Also it seems to register native checkbox callbacks that CheckboxCtril does not have. I have less than zero knowledge of wx, though, so I may be completely misunderstanding something.

I managed to get the script to export a mesh with a morph on it, but none of the various option buttons seemed to do anything.

-- I'm not mad at you, just Westphalian.