Cannot delete old Backup Destination Drives in Manage Destination Screen

I copied a recovery point to my laptop using Ghost 15.  I subsequently deleted it using the Manage Backup Destination screen.  Ghost returned the following error:

 

"Error: E1ADCOFB: While the recovery points have been removed, the actual recovery point files could not be deleted." 

 

It actually did delete the files but doesn't seem to recognize that and retains the Backup Drive in  the Manage Backup Destination screen.  In similar instances, I've had to delete the history files including all current backup files and start over.

 

Any suggestions would be appreciated.