I would upgrade to DSM 7.
There is limited shelf life for DSM 6 even though it’s still supported.
When you migrate (upgrade the NAS) from DSM 6 → DSM 7, PMS has to jump through a lot of hoops.
If you’re going to do this, I recommend:
- Uninstall the DSM 6 Plex app
- Upgrade DSM to DSM 7.2.2 (current) and upgrade all the apps.
- After it’s all upgraded NOW reinstall PMS.
– CAVEAT: Plex.tv/downloads – DSM 7.2.2+ Package file (they changed things) - It will likely bark at you / fail . This is expected because of all the changes HOWEVER, the procedure is documented.
Under perfect circumstances, I’d have had the installer do all the work silently for you (as it was done in DSM 6). DSM 7 took away ALL app privileges resulting in a list of instructions for you to do.
It’s all documented in that FAQ.
If you have questions (this is a detail rich step) Please don’t hesitate.