Hi.
I've created my melee weapon but it has a strange physics behavior - when I place it in GECK, it keeps turning around. It looks like screwed pivot point or something.
I tried to bypass this by classic mesh swapping feature in NifSkope. But now the problem is bigger - when I choose it's mesh, the GECK will immediately crash.
Please, does anybody know what I did wrong?

Here are those nif files:

http://www.mediafire.com/?31y5t46o0ku8b0e