Different Restore Error

I get the following error when I try to restore a database on a SQL 2005 server
TITLE: Microsoft SQL Server Management Studio Express
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Restore failed for Server '172.27.101.60'. (Microsoft.SqlServer.Express.Smo)
For help, click:
http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Restore+Server&LinkId=20476
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ADDITIONAL INFORMATION:
System.Data.SqlClient.SqlError: The backup set holds a backup of a database
other than the existing 'Mirror_Test' database.
(Microsoft.SqlServer.Express.Smo)
For help, click:
http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&LinkId=20476
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BUTTONS:
OK
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MG"MGeles" <michael.geles@.thomson.com> wrote in message
news:87ECF046-E857-4682-AF97-8F6425F13AD9@.microsoft.com...
> I get the following error when I try to restore a database on a SQL 2005
server
Is is possible the backup file contains multiple backups within it.
> TITLE: Microsoft SQL Server Management Studio Express
> --
> Restore failed for Server '172.27.101.60'.
(Microsoft.SqlServer.Express.Smo)
> For help, click:
>
http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Restore+Server&LinkId=20476
> --
> ADDITIONAL INFORMATION:
> System.Data.SqlClient.SqlError: The backup set holds a backup of a
database
> other than the existing 'Mirror_Test' database.
> (Microsoft.SqlServer.Express.Smo)
> For help, click:
>
http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&LinkId=20476
> --
> BUTTONS:
> OK
> --
> --
> MG