Having Graphics Problems with GODFollow

Ever since i bought the expansion Gates of Discord i have been having problems. When i warp into Naderia's Landing the Ground graphix are clear, i can see right through to the ground and when i try to zone out or warp out the game crashes. This has started happening in other zones now as well. Pok has done this with the library and i can't don't even want to go to Natimbi (Reason why i got the expansion to play with friends there), for fear of the headache of trying to get back.

Any body else having these problems and if so how did you fix.

P.S. I have downloaded all the new drivers for my GForc4 4200ti and also the Direct X. still does it