I was trying to set up a LAN game with my brother yesterday.  After installing Sins from the Gamestop app on two computers in my house, I tried to get the game running and received the message "Your game files differ from the host's.  Please make sure you have the latest update." This in and of itself would be merely annoying, but what really frustrates me is the fact that I uninstalled and reinstalled the game twice per computer.  I haven't seen anything that says mesh on it in an error message so far.  Any help with this would be appreciated.