Unreal Editor 4.11

Can someone explain how i play/launch a demo project and get it to work in my Oculus Rift CV1.
I have only tried 4.11, am installing 4.10.4 as i type.

When i play game from Unreal Editor 4.11 oculus pauses and then displayes a message saying that U4UEditor.exe is not working…?

Any help in the right direction gladly received.

The games all work on screen perfectly.
Many VIRTUAL Thanks