Paul-Simon

I'm having a strange issue with this mod on 0.90. Every part is duplicated in the parts list, as in there's two of every part. This fills the list up unnecessarily. I've tried uninstalling and reinstalling the mod, and I've tried (as someone i found through google suggested) deleting the Squad and NASAmission folders and then verified game cache to re-download them. It's still happening, and I've no idea what to do.