I’m not sure if this is up to Valve or Epic to fix, so I will post this in both forums. Today when my SteamVR Beta updated, suddenly my HMD is not detected in UE4 version 4.16. When I opt-out of the SteamVR Beta, my HMD is detected in my 4.16 project. As of right now, this bug should be repeatable.
Current fix is to opt-out of the SteamVR Beta.
I have attached all of my recent crash logs.