help getting Black ops to work?

BinaryFusion

New member
I just bought black ops a few days a go and when i install it, it says duplicate key... ive tried and tried again, i think someone is using my key.What should i do???? Is there a way to just get singleplayer to work at least???

btw idont think i can return the game coz they have a policy where there is no money back guarentee for games..
 
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