Whenever I want to play a game with friends the game loads in and immediately starts saying that there is a Desync (Beat# 1) I don't know what the problem could be.
Everyone doesn't have the mods.
Or hasn't activated them
Or one of them has the mod but is an older version to what you are using
Thanks for all the replys
Please post a full Game.log next time, so we don't need to guess so much.