l7oom

I bought ArmA2: CO last night and so far ive only installed OA and before it even opens ive gotten an error saying "data file too short". ive also installed and played the demo a few days before with no issues :mad:. ive restarted my comp - didnt work ive ran steam as admin and verified the cashe -didnt work im just looking for a solution that isnt i having to reinstall the game ok nevermind i found the issue was that i had arma 2 partially installed. I remember the error saying it was in the Arma 2 folder and not Arma2OA.