Is this in a particular dungeon, or in any of them?
Try deleting the files in the dynamic folders (if you reset the configuration when prompted starting the game after one of the crashes, this may have been done already);
'..\Beyond Divinity\Acts\Act1\Dynamic', '..\Beyond Divinity\Acts\Act2\Dynamic', etc.
These folders are used as a cache for the game. Files are created / copied there from the save game folder when you load, and written / copied to those folders when you save a game. The files will be re-created as required the next time you start Beyond Divinity. If there was a corrupt file in those folders, deleting the files should fix the problem.
