It seems that the new update from Unity is a dud for VR. Keeps crashing when playing or building anything with the DK2 plugged in or otherwise turned on.
I've checked the forums and @cybereality said:
"If possible, it's recommended to use Unity 5.1.2f1 with the latest version of the Oculus Utilities."
Just wondering, is this a permanent situation? And is the issue on the Unity update a editor problem or a Oculus problem?
The problem is with the Oculus integration inside of Unity. It has to do with texture allocation when MSAA or linear lighting is enabled. A fix is expected in a Unity 5.1.3 patch release within 1-2 weeks.