Yes, this was a case of me trying anything to get the code to “work” (having also dealt with out of date libraries and getting tings to work with Apple’s M1. I followed the suggestion you made elsewhere RuntimeError: Error(s) in loading state_dict for Inception3: - #2 by ptrblck at that seems to help with a trivial test case. I’m now running a larger dataset to see what happens. Thank you for your help.