Here are the logs where I just tried to watching channel 101 and it failed:
Plex Media Server Logs_2018-10-06_17-03-23.zip (1.0 MB)
I haven’t tried to go back to earlier versions to find a version that works, but there are enough people now with the same issue in version 1.13.8.5395 to make it more than just coincidence. Has someone looked at all of the code changes in this release to see which could have broken Live TV/DVR?
