Well, no idea what’s wrong with the current build of Plex I was using @ChuckPa & @BigWheel.
Thanks for the helpful advice @SE56.
I was able to fix everything by following the instructions in this thread to roll back to Version 1.22.3.4523.
I don’t know what’s wrong with version 1.23.3.4707, but hopefully you guys can forward this as a bug report.
