No idea why, but it does.
Ivault complains that it has not been activated and asks for activation code
Applies to uninstallation of CIS 3.8.65951.477
Running XP SP3
Only commodo security software
Re-activating Ivault with original code resolves issue
Good idea to fix - Ivault codes expire after one year - if not fixed abandoned Ivault users may lose access to their passwords. Not good!