lol, its pretty cool, but my guess is the Bones/skeleton you've used for the Structure

(hey, that sounded smart

lol)
so what bones/skeleton have you used? I think you just used the one from the Rebel Soldier, or what? but try to search/look for the .ODF for the Ewoks, and see if there's any difference then the one you've used
tell me if that worked

but I'm 70% sure its something with the bones/structure
C ya
hey, you didnt just added a texture on it, RIGHT??? because it REALLY looks like you just took the rebel soldier, and added the Ewok Texture

THAT could give that result

if you DID that, ask some of the others, about how to add an Ewok to your map
man - I'm SMART today

lol