Raphael_Lafayette 1 Posted September 21, 2012 I'm having trouble starting the game, the error message appears ''bad serial number given in Setup'' what can I do? Sorry for the english haha Share this post Link to post Share on other sites
Selvetarm 0 Posted September 21, 2012 you have to start arma 2, arma 2 OA and then arma 2 CO before launching dayz Share this post Link to post Share on other sites
IIxSubmarinex 13 Posted September 21, 2012 Try what Selvetarm suggested, if that fails, verify the cache by right clicking arma II: OA Properties Local Files *Verify Integrity Of Game Cache*, the completely * i say* "Completly exit" steam, the open again as admin, test it, if that fails verify it again and try it, :)if that fails to work as well, go take a peep at this post "http://dayzmod.com/forum/index.php?/topic/68081-fix-arma-2-combined-operations-says-bad-serial-number-given-in-setup/"-IIxSubmarinex Share this post Link to post Share on other sites
