So I just installed the 3.13 patch, and fired up a multiplayer game with a friend of mine. Immediately after starting the map, before even taking the first turn, we got a nice red message on the screen stating that we had lost sync. A save a reload fixes it, but it always pops up soon afterward. We've played plenty of games with 3.03 before, and have never had this problem. Something tells me there will be a 3.13.1 or 3.14 patch soon.