Visual Error..

Hey guys i was playing the new mission today and i reached the final boss, just after attacking him i crashed out of the game, total freeze. Now everytime i load the game i get the display all distorted kinda like the picture is being pulled very strange.




if you can imagin these shots all flashing a few times a second it hurts and definatly not playable

all help is appreciated much

Thanks for the info... exept its not. game runs fine now, uninstalled via add/remove (it dosent remove the graphics btw, so thats why i had same problem on first re-install) just had to manually delete all the info.
thanks anyway