I'm having the exact same issue as the byzantine empire. Right when turn 59 is about to start I recieve the same error message as you do. Some Event causing something to happen. A real shame because this mod is so good and I really enjoyed this campaign with the byzantines. Hopefully the Wallachian will see this and perhaps spot a fix. :(
Uploaded my logs here: Easyupload.io
Dongerlordd
joined
This member has provided no bio about themself...