Installing or upgrading fails and an error similar to the following is logged in the event log:
"Cannot create file <PathToSQLDBFiles>\RecoveryManager-Reporting-<RMADServerName>.mdf because it already exists. Change the file path or the file name, and retry the operation.
Note: The comparison database does not hold any historical data and is only used when running the Online Restore Wizard to create a comparison report. It can be safely deleted and recreated.