I'm having the same issue today, I played on a server for about 5 min then changed servers cause it was too dark to see anything. But now every server I pick gives me the exact same error. It was working just fine yesterday, I even reinstalled dayz but that doesn't seem to help at all. EDIT: After some tries to get it to work, I launched arma2OA without using the dayzcommander. I enabled the dayz expansion and then tried searching for a server manually. That seemed to work, the battleye doesn't kick me out then.