Hello Ivan,
I tested on 0.43 and my project made it through:

So, it’s something about my Promo version, after it being uninstalled and freshly installed. I tried under a new user, no go. I did notice under the new user that the preference for cache location in RC persisted from the other user, so does that imply something may still bleed through that’s causing the crash? How can one be sure everything is uninstalled when there appears only to be one crack at it? Thanks.
Benjy