Netware 6.5 sp4

We are having major problems trying to get ENS to work. We have verified
that everything is set up correctly, and even used a load line similar to
the following to start NDPS: LOAD NDPSM ".NDPS-MGR-NAME.OU.O"

According to the NDPS manager status screen, every printer has the correct
values for "Notification Service", "Resource Service", and "Service Registry
Service". i.e. they are all set to our one-and-only Print Broker. Yet,
when we go into NWAdmin, and bring up the properties of a printer, and the
Notifications section, we get the following error message:

"Required notification methods are not available or the printer is shut
down. Verify that the Event Notification service is enabled (with
notification methods loaded) and that the printer is running." "Message
number: 275"

Note: we have two servers clustered to a shared scsi SAN. Each Server has
SYS volume and the SAN has the shared VOL1. The Print Broker and Manager
are setup to use the shared SAN VOL1 and printing is working perfectly.
Novell SEND MESSAGE is working correctly.

We have verified all of this, but can go no further. Any ideas????? Thank