Are you by any chance restoring a database that was used with Roon 2.0 build 1148?
From the release notes:
Should you have a backup of your database of Roon from an older version, you can still downgrade without issue.
Are you by any chance restoring a database that was used with Roon 2.0 build 1148?
From the release notes:
Should you have a backup of your database of Roon from an older version, you can still downgrade without issue.