Fallout 3 New Vegas was running fin (Including the dead money dlc) Just downloaded HH and came crashs upon start up. i tried verifying game cash and it won't let me claiming some game is running or same crap like that. Nothing is running so I can't verify cash.
Any suggestions?

ugh i don't know man. Call up xbox or ps3

Also we've been over this, fallout new vegas, not fallout 3 new vegas

Yeah that will totally help with his PC issue.

@op: restart your PC and try again, although i've had a similiar problem with HH where it just prevents the game from starting, i had to redownload the whole thing because verifying didn't help.