Running a custom map with 127 tiles (including the castle) and on turn 45 the game locked up. I clicked on the end of turn button and ended up with the screen you see below. ESC brings up the options go to back to cartographer or continue. Clicking on the raven buttons doesn't do anything. Unable to select units or settlements. You can see a large battle in the center of the map. At different points during the game I had a troop advantage, yet troops wouldn't die off and resolve.