Link_Satonaka: gog's troubleshooting page: crashing_in_general
This is a generic page, not specific to any game. It actually is advising people to turn off UAC!? This is not something you should be advising your users to do, ever! This is the worst possible advice you can give to people, particularly those who don't understand the implications of what they're doing. This page doesn't give any hints about the possible ramifications of this.
If there exists a game that requires UAC to be off (and I personally have never encountered this), then that game should be explicitly marked on the storefront, and this should be a troubleshooting recommendation specific to that game. This absolutely
SHOULD NOT be general troubleshooting advice!
I have encountered it. Mass Effect 1 PC for me wouldn't work at all, for anything, with it on. Turn it off, starts right up.