I am unable to make the imaged systems work with the ZCM agent installed, I get a -34 error when trying to register the workstation.

Here are the steps I followed. I did not use sysprep, we do not use sysprep. Is it necessary here.

Boot up PC.
Remove Zen Adaptive agent & reboot - tell it to remove machine from zone.
Download full Zen agent to local disk
Disconnect NIC
Run the Agent, but DON'T reboot at end.
Browse to HKLM\Software\Novell\Zenworks\PreAgent and delete the GUID entry
Browse to HKLM\Software\Novell\Zenworks\Remote Management\Agent and delete any subkeys with machine names on them.
Browse to HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Systemand remove the entry pointing at ziswin.exe (Leave the System key in place)
Run C:\Program Files\Novell\Zenworks\Bin\Preboot\ziswin
Click Edit, clear imagesafe data, and save - Click No to the question about "just imaged" if asked
Run sysprep -mini -quiet -reseal - this will prep the machine and switch it off.
Cut image.