iManager 2.6 fails to install with runtime exception:

iManager on the server had stopped functioning, on investigation it was noticed that everything in the /var/ops/novell/iManager/nps directory was missing.

Executed /var/opt/novell/iManager/nps/UninstallerData/UninstalliManager to remove the original installation of iManager 2.6
then ran iManagerInstallLinux.bin to reinstall iManager 2.6. At the end of the installation the script states

"Installation: Successful with errors."
34 SUCCESSES
0 WARNINGS
3 NONFATAL ERRORS
0 FATAL ERRORS

The log file /var/log/Novell_iManager_2_6_InstallLog.log contains the following errors
Custom Action:com.novell.application.iManager.install.LinuxInstalliManager
Status: ERROR Additional Notes: ERROR - class com.novell.application.iManager.install.LinuxInstalliManager.install() runtime exception:

other errors include

Command Line: Status: ERROR Additional Notes: ERROR - echo admin.context.TREE-NAME=eDir > /var/opt/novell/tomcat4/webapps/nps/WEB-INF/configiman.properties
/bin/sh: line 1: /var/opt/novell/tomcat4/webapps/nps/WEB-INF/configiman.properties: No such file or directory

and

Command Line: Status: ERROR Additional Notes: ERROR - chown novlwww:novlwww /var/opt/novell/tomcat4/webapps/nps/WEB-INF/configiman.properties
chown: cannot access `/var/opt/novell/tomcat4/webapps/nps/WEB-INF/configiman.properties': No such file or directory

The uninstall script had failed to remove the iManager and associated rpms, ie novell-imanager-2.6-244, novell-base etc
By just manually removing the two key iManager rpms, novell-imanager and novell-base rpms and then rerunning the iManager install we where able to successfully reinstall iManager 2.6