Jellyfin 10.8.11 upgrade failed

[jw2k_fr]

Backup C:\ProgramData\Jellyfin.  Uninstall if there is an uninstall entry.  Reinstall Jellyfin as a basic install.  Copy your backup folder back to C:\ProgramData\Jellyfin

I copied C:\ProgramData\Jellyfin to the desktop and renamed the original to C:\ProgramData\JellyfinOld

There was no uninstall option in Add/Remove Programs, so I did a new, advanced install and selected the Server option and chose to use the default service (not the local account).

After the install completed I stopped the jellyfin server service, and...
 renamed      C:\ProgramData\Jellyfin     to     C:\ProgramDataJellyfinNew
 and also      C:\ProgramDataJellyfinOld     to     C:\ProgramDataJellyfin
 hence 'backing up' the new data and moving the old folder into its place.

I restarted the Jellyfin service but didn't see a System Tray icon. If I tried my old URL to manage the server I just saw a jellyfin logo and text, which I later found out is consistent with the service not running.

So, I rebooted and immediately saw a system tray icon, however I got an error message saying 
  "When running Jellyfin as a service, the tray application must be run as Administrator".  
  So I created a local account named jellyfin, set it to not be able to change its own password and set the option for the password to never expire.  I went back to services.msc and configured the Jellyfin Server service to use that account and tried restarting the service.  It started up and stayed that way this time with no error message.  Right-clicking on the system tray icon also showed the Jellyfin server running and when I opened the web admin page my original catalog of media also showed up in Jellyfin!!!

So, thank you for your assistance!  I'm very grateful to be able to watch something this evening.  Hopefully the old/existing data structure won't clash with any of the significant changes made in the last two releases!

I will report back here if I find any weirdnesses