Combined Operations crashing on startup

[Jimiester 0]

Hey,

I just recently downloaded DayZ 1.7.2.6 and the latest beta patch but now whenever i try to launch Arma 2: Combined Operations the game will instantly crash (A black command prompt-like window will show for half a second and then close though), anyone having the same problem?

I've tried running steam in admin, updating graphics drivers, getting complete install from a friend but still nothing has worked.

Specs:

i7 2600k

8GB Ram

GTX 570

Any help will be appreciated,

Thanks.

Edited September 10, 2012 by Jimiester

[Dunkaroos 12]

Verify the files in steam, then start Arma II once, then OA once.

Good luck

[Jimiester 0]

I tried that but still isn't launching but thanks for suggesting it, the weird thing is, when I start DayZ Commander and connect to a server it goes right into the game but right clicking steam and going to Combined Operations still no go.