Roon crashes on launch

If you can’t successfully restore a Roon library backup, then you might be running into this -

After encountering that just once and consequently having to rebuild my library from scratch, I now follow this backup schedule -

Not much help now, but there it is…

OTOH, as a last ditch effort, I would make sure that all of Roon’s directories on the Core machine are deleted and then try one more time with a fresh install and library restore.

Once you have deleted all of Roon’s folders, but not the backups, and have a clean install, then you can find and restore your backups from Settings==>Backups==>Find Backups.