Hey guys so i recently bought DayZ along with the Arma 2 + Arma 2 OA so i could play the DayZ. I bought all this off steam, I cannot play on any servers though, i have tried to research it but cant find any solutions. the errors it gives me varies. Sometimes it wont let me even load up the game, sometimes it says my CD Key is not registered, and sometimes it says some graphics file is invalid or something... If anyone could help that would be amazing! Thanks.