Norton Ghost 15 Error: E98F0004: RPAM initialisation failed

I am running Ghost 15 on XPsp3 backing up C:\ to X:\Backups

The backup runs to completion successfully, but does not clean up when the number of backups created exceeds the number configured (4).  The email status returns successful, but shows the RPAM error.

 

Date: 3/23/2012 20:30:23 PM

Notification Type: Info

Priority: High

Description: Info 6C8F043D: Recovery point [My Book]\Arch-2_C_Drive022.v2i deleted to comply with the number of recovery points to save for each drive.  Error E98F0004: RPAM initialisation failed.

 

Which is also logged in the Application event log.

The backup drive eventually fills up and starts to fail.

There is a lot of chatter on the internet, but no fix other than chkdsk - which does not work.

HELP!!