Hello,
there's a stable update available for Emby (v3.0.6200).
To update just change the link within /usr/share/openmediavault/mkconf/emby
SSH to your server and enter the following command:
Chance the line
into
With Ctrl+"O", followed by Enter save it and with Ctrl+"X" close nano-editor.
Login to your OMV-GUI, go to "Emby Server" under services and press the button "Force update" and "Start" in the opening window. Wait some seconds till it's finished and some more.
Change the above changed "LINK" back to the original one (with the latest at the end).
Save it again and than reboot the server. Voila after the next start you will see the updated emby server.
My thanks for this goes to @tekkb for the description here and here.