Okay... I don't know what to do, I installed a mod "The Mars Effect" and was playing the mod for a few games, then decided to try playing online, well I disabled the mod first and then tried to connect to a game and I keep getting an error that I don't have the same mesh files as the host....  I reinstalled the game, and then tried again and I'm still getting the same problem...

Any ideas of what is wrong?!