I play on a mac, usually with two or three of my friends who play on PCs. I downloaded this mod, then didn't know how to activate it. So I thought "Whatever, I'll just play normal G&K." When we started to set up the game, It came back with a version mismatch error. We have since both downloaded BNW, but it still gives us the version mismatch. What do I have to do in order to play with my friends again?