Been crashing every time it loads the next turn. The save is a few turns away. You can repeat the bug by doing exactly what I do in the video. I wonder if it has something to do with the diplomacy pop-up from Yithril. Also a nice little tactical battle for your gaming pleasure.
Zip: http://www.mediafire.com/?ya391k4cyfazr9a
Err: http://www.mediafire.com/?csb6bamldt5apg8
Save: http://www.mediafire.com/?4zh6mxer5n91ygb
Video of Crash: http://www.mediafire.com/?3zzdwmvxak4mmq7