I am currently playing the Greek faction and I have a large army in the region of Jerusalem. My army is posted on the bridge right above the city. Whenever I hit the end turn button the Egypt faction attacks me on the bridge. When I choose to do the battle, I will complete it, but when the game returns back to the upkeep part of the game, it will crash, I believe it is called CTD. If I choose to withdrawal from the battle instead of fighting, the game will crash while its doing its upkeep. As a third option, I moved my army away from the bridge before hitting the end turn button. This did not help, when I hit the end turn button the game will crash while its doing the upkeep. What must I do?