I reinstalled Emby on my WD PR2100 with the latest beta version (18.104.22.168) after trying to find the Emby Guide data for live tv. Prior to installing the beta version, I still could not get any channel to play. I am using an HDHomeRun tuner with the premium tv package. I also have an m3u tuner. I set up the guide providers and refreshed the guide data. I am still now able to view any channel. All I get is the endless spinning wheel.
One other fact that may be important is I just added a second router behind a Uverse router. All my devices are now connected to the second router and everything seems to be working fine. Plex also runs on the PR2100 and it has no problem playing live tv.
I have attached the full server log. I cannot figure out why Emby refuses to play live tv.