I have been enjoying your mod but a few minutes ago I had 2 crashes at a siege of adrianople(i think, first region above constant)
Instead of loading the battle the screen just went black and my pc "pinged" once.
Tried it 2 times with same result, I was playing the byzantines, occupants were rebels.
I haven't had crashes in my danish campaign(about 20 battles, 30turns) and in my russian and turkish one.
I'll try taking it with the hungarians, if it's the same.
EDIT: blitzed it with the hungarians, didn't have a problem now, maybe it's something with my medieval.