spikeman277 0 Posted July 7, 2012 When I downloaded the mod on a youtube video, I did everything right but when I open the game it says "Bad serial Number given in setup"I don't know what to do, I downloaded this on steam and I got combined operations a special pack for ArmA 2 and Arma 2 OA (Operation Arrowhead) Share this post Link to post Share on other sites
