Im on my way out but I'll search when I get back just wanted to let you know whats happening in my case.
With every new 0 turn faction Im getting them at various times but allways EOT and always no matter what I do I cant get past it. Ive gotten as far as 475 with Bosphoros (4TY) and as soon as 445 (I think) with Syracuse. Most of the time it happens at the end of the Roman turn (will pause on the Romans as usual then CTD) but at least 1 game its when Pontic just come up.
I took dkv's advice and have as many as 15 saves, but I think Im saving too often, every 2-5 turns. Ive gone back as far from save 10 to save 1 and just hit end of turn until I get to the same year and CTD.
Thing is Ive gone entire games with only one or 2 CTDs with 1 turn factions and going back a few saves always fixed it. Dont think its a 0 turn problem though.
Time to reinstall?