Yns-Mons Crash

Here i am again i thought i d open another thread for this bug. I played as casse until the protectorate bug (other thread) and of course brigans spawn all the time in britain. Sometimes they lay siege on yns-Mons or waht is called the city in wales. To siege the city they have to stand on the bridge its the only way to get to yns-mons. If i try to bring in a relief force and attackt them from the back the game crashes, no CTD it really crashes in the battle loading screen, have to press reset. Reproduced this 5 times. So i let them take the city and then retook it with my relief force. Maybe 30 turns later i got the same problem. Both times it cost me my uncharismatic, dull governor. :gring:

Try following the instructions here. Thanks.