SBS 2008 Group Policy

Hi

I have started getting the following error on my Windows SBS 2008 event viewer in the SBS Server/Operational section of eventviewer

The User accounts cannot be added into GroupPolicy 'AllSBSUsers'. Please Verify the GroupPolicy 'AllSBSUsers' exists.

Also the following error is getting logged in the event viewer administrative events section

The processing of Group Policy failed. Windows attempted to read the file \\treetops.local\SysVol\treetops.local\Policies\{092FB4A5-B7BC-463A-B7CB-E41E2F907CA2}\gpt.ini from a domain controller and was not successful. Group Policy settings may not be applied until this event is resolved. This issue may be transient and could be caused by one or more of the following:
a) Name Resolution/Network Connectivity to the current domain controller.
b) File Replication Service Latency (a file created on another domain controller has not replicated to the current domain controller).
c) The Distributed File System (DFS) client has been disabled.


1 or 2 clients cannot get to the shared folders or redirected My Documents when this happens.