TF2 problems with GMod

I have been having some problems with models and maps recently with TF2 inside of Garry’s Mod.

The two main things:

– Materials on models are black, on both RED and BLU skins of models.

http://dl.getdropbox.com/u/51661/gm_construct0005.jpg

“ETHNICITY IS CREDIT TO TEAM!!”

This goes for all the characters, some of their weapons, all of their hats and custom weapons.

– TF2 Maps run at an extremely low FPS in Garry’s Mod

Every single map in TF2, when ran in Garry’s Mod, lags my framerate to the 10s. I run GMod on my native resolution, max settings including AA and AF. It runs extremely smooth on every other map.

Here’s my specs, in case it may help:

Intel Core2 Quad Q8200 @ 2.2ghz - No Overclock
ATI Radeon HD4850 512MB
4 GB DDR3 Ram
500 GB HDD

Any help will be appreciated!

Ah, okay. That fixes that.

What about the map problem?