@Joerg-Volker_Mueller Try powering everything off, not a reboot, then power up one at a time, include your router and any network switches in the power off.
If unsuccessful it may be db corruption?
After updating the OS and reinstalling RoonServer I restored an older backup (September '22) which worked. The client has to be rebooted to reconnect with the restored server, however.
I then tried to restore the last backup before the problem occurred: 0 albums. Interesting, that even the 400 or so Qobuz albums were not shown as well!
So I restored a 3 weeks old backup and everything is well.
Somehow, the database was corrupt both in the live version and in the backup.
@Roon: Robustness of the database should be paramount! Why is there no error log? Why can’t the conversion algorithm say “everything converted, except …”?
I can take your suggestions to the table when I get an opportunity. Some form of the output of the error messaging (like we do for ARC) could greatly improve user self-service opportunities.
I’m glad you’re up and running though. A happy new year to you and yours.