Last night I was playing Napoleon: Total War multiplayer campaign with a friend on a mac. We finish for the night and save the game, and as soon as I quit the game I close my computer and go to sleep. This morning, when I launch the game, we decide to warm up with a quick battle. I host the game, but he says the message "Host not responding" appears. We switch roles and he hosts but nothing works. We then try to join a third person's game, and he can join but I still cannot (the same error message kept appearing.) After a while, I decide to just leave the mac and go play more Napoleon, but on my PC. When I launch my PC, all the games are red and have "Different versions." I have a mod but it doesn't activate unless I run it, and I could do multiplayer on it previously as well. Since I am now unable to play anywhere, I am close to quitting altogether if nobody can help me.