Skins not working

http://img826.imageshack.us/img826/5293/screenshot20121126at100.jpg

So after the update I was browsing to see how I could get my models back, and found out I had to put the files into the Materials and Models folders, then started the game to test them out. Anyway, this was the result. Some of the models have skins but most don’t. Any reason why this would have happened? (By the way, the Abrams model is a recent upload after the update.)