Every Time I try to lunch Combined Assault I get a flash of a windows command line and then nothing happens. each of the games started individual. I also opened steam as administrator and tried lunching CO there the short cut in the steamapp folder.
when trying to start arma CO it gives me this cmd box http://desmond.imageshack.us/Himg259/scaled.php?server=259&filename=fullscreencapture742012.png&res=landing