Wow. I need to take back my assumption that the database was the problem. It turned out to be permissions. I've saw this issue after my last PMS plugin upgrade. The way you recognize that it's permissions is that you'll see the command to start PMS in the process list (ps -aux | grep -plex will have one result ) . It's a fairly long command but I key off of the control.py part - "/usr/pbi.../control.py..." . I killed the one process, did a chmod -R 777 on the /usr/pbi/plexmediaserver... folder, and then started the Plex plugin. It worked fine that way. I still have a problem logging into the plexapp site, because Plex still thinks the site is plexapp.com when it's now plex.tv .
I will still come up with a backup solution for my Plex database. There is way too much work in there to lose it.
My apologies to the Plugin developers for jumping the gun. The permission issue is still a pain to deal with , that's a better problem to have than lost data!
