Can't Start

[Derpatron 0]

I just got Arma 2, I was playing some of the missions, everything is fine. When I launch Operation Arrowhead I get the message

http://gyazo.com/e367bcc86a2749d71ae99c6522b2924b

Then when I press OK it loads up, then I get this

http://gyazo.com/3091124e9cdc8edeb6539efbe995225c

I'm launching through steam, the launch options are

-mod=@dayz -nosplash

Please help, this looks so cool :(

[Teach (DayZ) 45]

try this in the launch options: -beta=Expansion\beta;Expansion\beta\Expansion -mod=@dayz -nosplash

This will only work if you have installed the beta patch manually, not via SixLauncher

[Aftershok 14]

Try this;

Run ArmA 2

Run ArmA 2 OA

Then try running ArmA 2 : CO. CD keys can require activation by launching the game before they work properly.

Also ensure you are running as admin.

Edited July 31, 2012 by Aftershok

[Derpatron 0]

I fixed it, I had to verify the games integrity via steam, now it works.

Thanks anyway!