Promatheus 0 Posted August 10, 2014 So I got Arma 2 and Operation Arrowhead from a humble bundle a while back and now I'm trying to run Day Z and I keep getting errors. I looked up how to solve these errors and it's because I don't have Arma 2: CO. Is there any way I can not have to buy CO since I already own the game and the dlc?! Share this post Link to post Share on other sites
