I'm trying to get WebVR working on my Rift in Firefox 55.0.3 64-bit. I put on my Rift and get the Oculus Home page in the Rift, switch over to Firefox with the mouse, click on a example (like [https://threejs.org/examples/?q=webvr#webvr_cubes]), and click on the "Enter VR" button. In the Rift, the Oculus home page fades out, and then fades right back in. That's it. On some VR-enabled pages I get "Firefox is taking a long time to load" in the Rift without any dialog boxes like I do with first-time running of Rift programs (I think that dialog comes from Kaspersky) I've updated all my Nvidia drivers (385.41, on a GTX 970) and Oculus drivers (can't find the version; but updated earlier today), changed the Nvidia power settings for Firefox, rebooted, made sure Unknown Sources is enabled for Oculus, turned off anti-virus, etc., etc. It's getting frustrating. Any one know how to fix this problem, or have ideas on what I else I can try?