i got arma2 and arma2 operation arrowhead from steam, i am having trouble getting on some servers. i can play on some server no problem but others i get an error and drop out of the server.
the error reads
"you cannot play/edit this mission; it is dependent on downloadable content that has been deleted.CAWheeled2_BTR90, warfarevehicles"
is there something i need to download in order to play?
any help trying to resolve this would be great