Backup Recovery not showing file and folder tree only Local disk (C:) Error: "The open instance of Recovery Wizard was inactive

Windows Server 2008 R2 edition with Hyper V installed and running two virtual Servers. Using Windows Server Backup to backup systems. On trying to do a test restore and using file and folder I see the server name and then the tree to Local Disk (C:) but when I try to expand the C drive after ten minutes get the error message:

"The open instance of Recovery Wizard was inactive for more than ten minutes. The wizard was automatically canceled to allow other backup or recovery tasks to proceed."

The backup history all shows as successful.

Don't know if this means the backups are useless or something else is preventing the recovery of individual files?

Hope there is a simple explanation for this and all the backups are still salvageable if needed.

Thanks

Chris



Chris P