Seems to be multiple instances of ".0.0", ",0.0" and ",0,0" in all the craft files, I should have said this is with any and all craft files, including stock craft, craft made with stock parts, and craft made with modded parts. While doing further testing of the mu importer, I did find one issue with a modded part (the science bay module from the USI Malamute Rover pack), but the error that gives does not show up with the traceback error when trying to import a craft that has the part.