Apparently Plex has changed the folder structure of the resources in their update packages, see this thread for details [ Ссылка ] ...so going forward, after replacing the plexmediaserver folder with the resources from the update, and creating the link for "Plex_Media_Server", you'll have to move all the files from the "lib" folder up to the main plexmediaserver folder. It'd probably be safer to copy them, than move them, but I spaced on doing that for this quick and dirty, video. I'll make a better video update later.
**if you use another BSD/linux variant instead of FreeNAS, the process is almost exactly the same: move the files from 'lib' up one level, then restart the server**
STEPS:
1 - replace the plexmediaserver (or plexmediaserver-plexpass) folder using the methods shown in my other videos
2 - in your FreeNAS web-console, go to the Jails section
3 - click the "dots" for your Plex jail, and choose "Shell"
4 - enter "cd /usr/local/share/plexmediaserver/lib" and hit enter
5 - enter "mv * .." and hit enter
6 - return to your jails list, and use the dots to restart your Plex jail
