My post above worked for me...
"BTW... No amount of updating through the TrueNAS interface worked, but a simple "pkg update -f emby-server" from the jail shell fixed everything. So it's just an issue with the TrueNAS update process which doesn't work. The program and underlying jail work fine."
So try that command for Emby and ZoneMinder as well. "pkg update -f zoneminder" from the shell of the jail itself. Shutdown Emby and ZoneMinder first before running the command and reboot. Worked for me. Then just do that to update going forward and avoid updating through the interface.
Of course, snapshot the jail first so you can roll back if all goes horribly wrong.
