Huntsman1212 0 Posted January 7, 2013 Hi, I just downloaded Arma 2 and the Dayz mod. As soon as I select a server and press play the game comes up with a message saying Bad serial number in Setup. If anyone can help me it would be much appreciated, thanks. Share this post Link to post Share on other sites
AmberHelios 2071 Posted January 7, 2013 there is a sticky devoted to this error.... have you ran each game to the menus with steam ran as admin Share this post Link to post Share on other sites
Rage VG 4033 Posted January 7, 2013 You need to run both ARMA II and ARMA II Operation Arrowhead as an admin. Waiting until the main menu loads up will suffice and you can exit the game. Share this post Link to post Share on other sites
mahoni (DayZ) 0 Posted January 20, 2013 Can't do this because steam thinks I need to re download the whole of operation arrowhead, admin and checking cache is not working, it was working an hour ago and after trying to update battle eye it wont even load in now. Also battle eye wont initialize. Nearly lost patience with the mod :( Share this post Link to post Share on other sites
