The intent is to allow programmers easy access to the sln regeneration option as it’s used quite frequently. We’re very open to suggestions that would allow users flexibility and usability.
As for your original problem - do you remember if any beta (previous or current) was saved to a specific folder other than the root Program Files directory? It might be that the fix above only works when using that original location. Our only repro case has since been fixed so we can’t verify that that’s the case.