oculus rift not working

Hello Everyone, I am in need of a little help.

When trying to see VR preview, the windows comes up but is all black. libovr is up to date and so is UE4 (version 10). Blue light turns on, on both the tracker and the HMD.
It is working on Demo scene utility and with Unity.

I also tried standalone game and it would not show on HMD.

Any Ideas?