When looking at the messaging for devices we are getting the following
warning on multiple computers. These warnings are followed by error
messages as follows:

Full Message:
Unexpected exception received when refreshing handler
QuickTaskRefresh(GeneralRefresh): Object reference not set to an instance of
an object.
Additional Information:
None
Severity: Warning
Date: March 12, 2008 7:47:20 AM
Acknowledged Date: None
Source: /Devices/Workstations/173wfc1
Message ID: ZMD.RefreshHandlerException
Probable Cause URL: None
Log ID: f5e42e9d3f048d13141fc755fd95109c
Related Objects: None

Full Message:
An error ocurred during a general refresh in module: QuickTaskRefresh. Error
Message: Object reference not set to an instance of an object.
Additional Information:
None
Severity: Error
Date: March 12, 2008 7:47:21 AM
Acknowledged Date: None
Source: /Devices/Workstations/173wfc1
Message ID: Registration.GeneralRefreshError
Probable Cause URL: None
Log ID: e119a262cc8d4e23277b45e6510055a3
Related Objects: None

Full Message:
Unable to obtain the policy definitions from the policy service.
Additional Information:
None
Severity: Error
Date: March 12, 2008 7:47:23 AM
Acknowledged Date: None
Source: /Devices/Workstations/173wfc1
Message ID: PolicyManager.ERROR_NO_DEFINITIONS
Probable Cause URL: None
Log ID: fa9954f86f0e365cbc065054c27b3685
Related Objects: None

This appears in similar forms on multiple devices. What am I doing wrong?
The warning message appears to have DNS related problems, but the resolution
in our instance does nothing to stop the warning and errors.

What I think is going on is that the workstations are not connecting
correctly and the information going back and forth is not complete. Many of
these got the 10.0.1 client and have never been able to log in correctly.
In some instances uninstall and reinstall has fixed it, but more often than
not the problem continues and the users cannot log in to the management
zone.