Neither those civs nor using Win7 causes any problems for me.
My guess is that most repeatable CTDs are caused by dying treasure chest, a bug which has been fixed in 1.31. Of course I can't say for sure until Valk gets around to releasing it to dirty non-team commoners like myself .
Well, I haven't had a CTD in a long while (Win 7 + ATI).
There would be many of those treasure chests since mayor AI annoyingly counters health problems by making citizens doctors, which leads great doctors, who are useless and which again AI uses to build that alchemy building, what-it's-called? where you can buy potions that then drop as treasure chests. Terrible sentence. AI buys a lot of potions sometimes and thus its units leave treasure chest stacks when they die.
The thing is; who exactly destroys those when you can as easily pick them up and use them yourself? I even stole AI's hidden treasure chest when I had a detector near by with no problem.