Summary
When restoring your SQL database backup, you may receive the following error message:
Error:3169 The backed up database has on-disk structure version 611. The server supports version 539 and cannot restore or upgrade this database. Restore filelist is terminating abnormally.
Cause
You are trying to restore a Microsoft SQL Server 2005 backup on a Microsoft SQL Server 2000 server. This is not a supported operation. Microsoft SQL Server 2005 does not support downgrades or restores to Microsoft SQL Server 2000.