Number of shared states is different on client and server!

Received this bug on a Lich. Portaled out of Dreadnaught ACT 2 Cruel then when I went back in it crashed and keeps crashing. Any fixes?

In patch 0.4.0c I also triggered this crash. While other reports have linked the crash to zone changes with a minion in some intermediate state like moving after exceeding the maximum distance this occurred to me in the Atziri's Temple zone while just running around. It did not occur immediately after a zone change. I was using a tame beast companion PorcupineAnt.

At the Character screen, there is a little house button on the character that says log into town or hideout. Click that if you dont want to wait the 15 mins. You do lose your portal and you will still get the same error every time you try to go back into that map. Also, it seems like not finishing the map (Killing the main boss) until the very last, prevents this from happening. Still experimenting with that part.