Backups of more than one computer were found in this location. Specify which computer's backups you want to use. To do this, ...

Backups of more than one computer were found in this location. Specify 
which computer's backups you want to use. To do this, use the parameter 
-machine:BackupMachineName with WBADMIN GET VERSIONS

The list of computers whose backups can be used to perform a recovery at the 
specified location: