In 4.11 "VR Preview" not displaying in Oculus DK2 - just black

Well you all are lucky at least the Rift is being detected. UE 4.11.1 has decided to no longer recognize my oculus while 4.10 works fine. Anyone got any ideas I am going to try that unplug replugin suggestion and maybe sacrifice a goat to the CPU god… ← just in case -NO this is a joke-