So there is a few skins that are buggy for me at least, and if you can fix it that would be very much appreciated here is a few screen shots that show the bug.Andthe arrow is point at a guy i can only see his hands and the giant error box is like zero suit samus it happen on her and the skin reina kousaka red on 35hp.
U should try to delete your models and materials folder in your game location.
Try this first. Its not a problem of the server.
Thanks it help