Environment
Novell ZENworks 11 Configuration Management 
Novell ZENworks 11 Configuration Management Support Pack 1 - ZCM 11 SP1Situation
 If ZENworksUninstall fails on a managed device, the manual cleanup tool from the previous version (AgentCleanup.exe for ZCM 10.x) must NOT be used or it will corrupt the uninstall further and a new install will fail for the same device.  
Resolution
 Use the version of the cleanup utility for your specific release of ZENworks - use this link to go to the Patch Finder and select the version of ZCM you are using to obtain the correct utility.
  
Additional Information
 Version 1.1.0.0 has a problem with Windows 7 and Windows 2008 - see TID 7009577 Manual cleanup tool version 1.1.0.0 leaves Windows 7 unable to login