i have graw and got a bad mod now i cant play where can i find the mod and delete it i have vista

woo hoo found the solution
goto start right click ,explore goto program filesx64 then look for ubisoft then goto the
ghost recon advanced warfighter file
then goto custom_levels THIS IS THE KICKER!
you should see only a read me txt file look for a compatibilty files under the address bar
click on that and you will see all your bundles right click on the one your haveing problems with and delete that should fix it it did mine