I've been playing this mod with two of my friends for a few weeks now and we all really love it. Unfortunately, it seems that after 1-2 hours after we start playing, the two players who aren't hosting crash at the same time. The host doesn't crash. It has only ever happened while we've played this mod.
We also have a problem where after we get past the year 1100, it gets hard for us to join each other's game. What I mean is that when I am hosting, my 2 friends connect just fine but after a period of loading the saved game, the borders disappear and when they hover the cursor over land, it says something like "No selectable Character". The host of the server sees everything as it should be, so it only affects the other players. We've each tried hosting but the same thing happens- the land turns a dark grey color and says "No selectable character" (sounds ominous, doesn't it). This has never happened with plain old CK2, but it has also happened with CK2+.
I've tried to see if anyone has mentioned this problem already but from what I've read, I haven't noticed anyone having the exact same problems as we have had. Any help would be appreciated, especially since one of my friends refuses to play anything but this mod now!