Schedule Backup as administrator error "You must be a member of the local Administrators or Backup Operators groups to schedule a backup."

Logged in as administrator
Going through Administrative Tools -> Windows Server Backup -> Backup Schedule
Setting up a new remote backup on a different server (requiring different login credentials to save to that location if it matters)

Everything goes through until I hit Finish on the Confirmation page, then after a few moments it gives me this:

Error:
"You must be a member of the local Administrators or Backup Operators groups to schedule a backup."

It does let me run the Backup Once through Windows Server Backup to the same location, but not through Backup Schedule.


From: http://social.technet.microsoft.com/Forums/en-US/windowsserver2008r2management/thread/7ef89d20-a305-4d17-a376-e13fc0468edc/