zmd-messages.log indicates the Quick task Assignment Service for the system update was being blocked "403 Forbidden" to receive updates.
ZeUS was marking service as bad. (%ZENworks_Home%\ZeUS\logs\zeus-messages.log)
Administrators Group had Read only to some of the ZENworks Folders.
Novell ZENworks Agent Service
Novell ZENworks Updater Service
Check directory %ZENworks_Home%\ZeUS\cache\ZeUSCache, it will start populating.