Shorah again Bob,
I agree, I think my GOG hotfix version was to make it compatible with Win10.
I’m finding all the gatekeeper workarounds to be unreliable in the end. For the last two days, my logins have gotten stuck without fail.
Your test with the gatekeeper is very helpful! I’ll see if I can dig up an older download of UruCC on one of my old hard drives and try using a WinXP bottle. I’d like to sort out the difference between the GOG versions and the differences between bypassing the gatekeeper (as you have done) and creating gatekeeper exceptions.
All of which means another long round of testing this weekend.