Somehow in the last day I can no longer launch YouTube on my Shield TV Pro (2015) at all. I've had this device since its launch and generally love it given all the updates Nvidia has given it. Anyways, the app begins to open then just immediately dumps me back to the home screen. Tried deleting cache, app data, rollback version, various reboots inbetween, nothing works. Only change recently to my account was that I made a sub "brand account" on YouTube but that was almost a week ago now and it worked fine for many days leading up to this so I'm not sold on that being the issue or not. Doesn't matter which account I select when trying to open YouTube either. Trying to cast from my phone to the Shield also has the same problem of dumping back to home screen. I CAN however cast to a normal Chromecast device without issue.

I had to resort to installing Smart Tube Next to get any YouTube playback for the time being. I'm just scratching my head here trying to figure out what happened and how to correct it.