Switching to the nightly build did not help with this problem- I remain unable to save non-FGB models and reload them . I've tried this on a variety of training sets/models and it appears to simply not work.
To be clear about the second point: I was only pointing out that reloading a saved non-FGB model failed regardless of if I had a training set loaded or not.
Lastly, I noticed in the nightly build that a training set saved in CPA 2.2.1 could not be loaded. It gave me the following error:
TypeError: 'NoneType' object has no attribute 'getitem'