What I was meaning to say was that I did the following:
- Reinstalled the Operating System (using the Reinstall blue button)
- Stopped the Roon Server (click the down arrow on the Restart blue button for the Roon Server Software).
- Reformatted the internal HDD holding my music files (using the Format blue button for the Internal Music Storage).
- Restored all my music files over the network to the now-empty internal HDD from a backup of my music files and folders)
- Restarted the Roon Server Software using the blue button.
- Started breathing again.
I should say that reinstalling the Operating System should not wipe out the pre-existing Roon database and your settings. see the KB article.