When it crashes it says something like "play withsix.exe has stopped working". I dont know how its called in english sry :D. And the same problem with the dayzcommander setup.

Hello Dayz community, Yesterday me and my friend bought Arma 2 CO on steam. I installed it and everything worked fine. My friend installed arma without problems and it runs. Then he installed the Six launcher. He started the .exe but crashed. I found the DayzCommander, but the Install dont works for him. I googled alot, but i didn't found any fix for that problem. Some1 know how to play without launcher or know that problem? He has win7 64x btw