Ghost 15 Can't delete missing recovery points

Using Ghost 15 on Windows 7 64 bit computer.

 

I deleted recovery point files to clear up disk space. Ghost now complains. I select: Tools:Manage Backup Destination:Clean Up Recovery Point History: Remove. Ghost then says "Connection to the recovery agent was lost" and also says the recovery points were successfully deleted. However, the entries don't go away from the history and Ghost continues to complain.

 

How should I clean up the recovery point history?