are you sure you dont mean direct-x device instead of div-x.
If thats the case it's a graphcard driver crash.. have seen that only once at my computer activating a leve and its a ff14 problem not a driver problem tho updating drivers may change your luck of it working right.
DivX is a video-driver for movies (codec) avi/mpeg and the like.. if its divx then you either miss the codec or it crashes and should be updated to the newest version