Update Manager Registration Wizare

When I run the Wizard it displays the following dialog box after step 3 "Storing System Information Please wait...." This will run for about an hour before the following error is displayed "Invalid User Error for System(Asset)" Have you seen this before and if so what could be causing the error.

Thanks,

[317 byte] By [SouthAtlanticSupport] at [2007-11-26 6:02:38]