Can Someone help me with this??

[Rumple]

I've been trying to get this problem fixed but no one seems to have the answer.
http://forums.epicgames.com/showthread.php?t=678328
I think the stock weapon replacer mutator is causing this problem.

[Tears of war]

have you made any modifications to any of the stock packages. When you do so it sometimes causes unwanted problems, you need be careful when changing things involving editors and such.