Thank you MuLaFlaga. I was able to repro a crash with your save, and that fix will be checked into today's patch (btw, you have a nice kingdom going there, watch out for those AI's rushing for a spell of making victory).
I don't know if the crash I got with your save is the same as the crash you got. But just like you I got maybe 50-80 turns in before it crashed. The logs don't give us enough info to go on, but it was great that we could catch it here in the office. We do have some additional debug code that would help us track it down if you run into it again so if you continue to have problems PM me and I'll get you some new code so we can get it fixed for you.
Thank you for your help, and I apologize for the inconvienence.