In the Extra's folder it gives you the option to add a special katana to the game. Now I'm up to that part in the game when I must face the Dark Brotherhood leader and kill him. Problem is, as soon as I kill him and he speaks "Tell my liege I am sorry I failed" (or something along those lines) his body gets a shade darker and he turns and drops to the floor. Now the bug
If I go in the next room I can see his body through the walls clearly. Even when leaving the area I can see his little tiny black body in the distance. Also the game won't let me click on his body at all. I can't get the katana from him, nor his armor. I can't do anything with him. It's as though his corpse ceases to exist once he speaks his last words. This is driving me insane right now. I keep reloading it and killing him over and over in hopes to get the Katana and armor he has as well as whatever else he may have on him.
Please help.