I recently got back to EB after several years and got stuck on my Hayastan run in a rather bad situation

Basically I have a battle that I win against Seleucids and when Rome's turn arrives as its about to switch to another faction game crashes. No error info, no notification, just plain CTD. Tried losing the battle, retreating, but it seems it has nothing to do with me. I even tried loading save file that was about 10 turns before and it still happens during Rome's turn after a few turns. Can I somehow see an error log somewhere to find out whats causing it?