inkognito11 0 Posted July 30, 2012 hello guys, i'm having a little problem starting day Z. I havent played it yet. but i have installed everything. yet i can't play it because when i try to launch it pop out a error. it says: Bad serial number given in setup?.. can someone explain to me what to do please? really dont know what to do Share this post Link to post Share on other sites
Hakultair 114 Posted July 30, 2012 You've probably got a Steam version I take it. Launch the game (Arma 2 OA) through Steam once. After that try again using sixlauncher.The cd-key isn't in your registry yet cause you never launched the game through Steam. Share this post Link to post Share on other sites
Torndeco (DayZ) 46 Posted July 30, 2012 Dont forget to launch steam as admin user at the startThen launch arma 2 + operation arrowhead, once the games are loaded up, u can quit back to desktop.U can then close steam & re-launch as normal and u should be good togo Share this post Link to post Share on other sites
