5.5.0f3 Rift CV1 never detected

I updated Unity to 5.5.0f3 and now UnityEngine.VR.VRDevice.isPresent returns false no matter what I do. I've plugged the headset and sensor into every variation of USB ports and restarted the Oculus app and Unity and my OS (Windows 7) in every order imaginable. No head tracking in. No screen out. All I get in the headset is the menu that shows activity, notifications, etc.

Am I the only one experiencing this problem?

 

Strange. I had to reconnect my internet 3 times before the Oculus app was able to ping Oculus servers and discover a software update. After installing the update, everything works again.