For anyone having problems with google music, here's what I did to fix my playback problems.
1.Install the beats audio driver, reboot after install
2.Clear cache/data for google music app
3.Launch google music and let it sync back up with you...
Yeah I would make sure you're using the vzw twrp, i did the exact same thing that you did and just simply pushing twrp recovery and flashing superuser.zip in recovery regained root access for me. I didn't have to run rumrunner twice.
I just purchased the blue htc one from best buy and I want to go rooted. Looked through the phone and I do not see anywhere to click debugging nor do I see a developer section. Is this phone not rootable? I looked into settings> apps> and all that...