jka works fine with win 8.1 pro build 9600 i use it my self for dev on my mod im not sure but what about try install dx runtime ? edit: i don't think this is a game problem m8, it is more like how you model of the saber has been maked or ported over or somthing in the files maybe, becours it don't apire in game not in the saber menu or the game it self and it do some wierd sound stuff and saber blade is not where it is suppose to be at all