[CR #340112] If your current Enterprise Security installation is version 2.5.2, check the upgrade log file. The upgrade fails if duplicate copies of the same user name exist in the security database. If this is the reason for the failure of the upgrade, you see something similar to this in the upgrade log:
"Attempt to insert duplicate key row in object 'Subject' with unique index 'AK_SUBJECTUID_SUBJECT'"
Workaround: Use the Enterprise Portal 5.0 SecurityAdminGUI to delete duplicate user names, then run the upgrade installation again.
