chrisfleming13419

I recently Purchased Arma 2:Combined operations on Steam for the day z mod and i cant run Arma 2:OA its says that a file is too short and ive tried to run as admin and verify but then it tell me that a file couldnt be verified and will be reacquired so i run OA again and same thing then i try and verify and i get the same message so i am at a loss here and i have no idea what to do next

sorry about the thread name but im new to this whole forum thing but ive done what you said and i still cant get the game to run and ive already previously contacted steam support and they tell me to contact BI support and then they ask me what antivirus program i have and i have no idea what that has to do with my problem.