OK Fixed it!!!
Delete the Plugin
You need to delete the Jail / Jails (esp if Upgrading from older Freenas).
Run a ZFS Scrub
Re-install Plex and then Stop it
Nav to Jails
Create a Mount Point from your Storage to /mnt/Volume1/iocage/jails/plex/root/media
Do this using the file tree and NOT typing it in (Don’t seem to like it)
Restart the Plugin (wait for DHCP)
Open Management and add your libraries using the file tree under /media
Happy Plex!