I have a problem too, it would be nice if i finally got answers to the issue im facing. since this last update, dayz as well as the arma 2 oa version on my pc is forced to be opened with steam, which was not the case before the 25th of july. somehow i cant start it without the appearance of the steam-login window, or, if im already signed in, an error code. the problem is that i dont have the steamversion of the game, i downloadet it by using the steam account of a friend and afterwards changing the key in the regedit files, it worked perfectly fine until i encountered this problem which seems to be related to either a dayz or arma 2 patch. has anyone any ideas?