Problem with Materials

Hello guys,
My Garry’s mod has a really weird problem,
The eyes of some of my models (In particular, the ones that are Eyeposable) do this:
[img_thumb]http://i.imgur.com/jGjfalN.jpg[/img_thumb]
Or this
[img_thumb]http://i.imgur.com/fdOKumf.jpg[/img_thumb]

Also, some custom texture on models that i hexed appears to be missing, even though they did work just fine before the update
I tried to play without Workshop addons, but the problem keeps staying

Any Help?