Everyone update the game to e1.0.10. Apparently they supposedly fixed it. "Fixed a crash in main storyline conspiracy phase" This happened to me and I assume it happened to you all. You must've created a kingdom, either imperial or not. If the crash isn't fixed then we should all help the devs as much as possible by giving details. The more details we give the sooner it's fixed.
Still having this problem in 1.0.10. Some details: I saved my game, could play for like 1-2 days extra and it crashed again. One of the empires got destroyed with 2 remaining. I have caravans. I have my own kingdom. No other active quests.
I have same problem but only on 1.1.0 (on 1.0.10 it works fine).
Nothing on logs or errors, game just freeze and then crash.
I have some mods installed so that might blur the image, but still if it could help you will find my save from 1.1.0 at https://gofile.io/?c=Ouwo5K.