Can you post the last few lines from the PSErrorLog.txt file in your Photoshop preferences folder?
That might give us some idea where the error is occuring.
I don't know where it's located
In your Photoshop preferences folder.
Those errors are from February 7, so not helpful. (and they were probably due to bugs in Generator that got fixed in 14.2.1).
Hmm, not sure why you aren't getting an error logged.
And I can't seem to get any errors when defining a custom shape.
What sort of shape/path do you have selected?
What sort of document are you using?