RCU 11.1.1.4 : failing prerequisites creating ESS schema

oracle.sysman.assistants.rcu.backend.validation.PrereqException: RCU-6083:Failed - Check prerequisites requirement for selected component:ESS
Please refer to RCU log at C:\temp\rcuHome\rcu\log\logdir.2011-01-21_09-53\rcu.log for details.
at oracle.sysman.assistants.rcu.backend.validation.PrereqEvaluator.executePrereqTask(PrereqEvaluator.java:642)
at oracle.sysman.assistants.rcu.backend.task.PrereqTask.execute(PrereqTask.java:68)
at oracle.sysman.assistants.rcu.backend.task.ActualTask.run(TaskRunner.java:306)
at java.lang.Thread.run(Thread.java:619)






the funny thing is that the log says to refer to itself for details.... but provides no details!


I see here other people struggling with this issue.

Luckily I don't need ESS, so I simply removed it and RCU worked....