Portal Runtime Error - User Mapping

Hi

I installed EP6 SP9, KMC and TREX successfully. I logged into the portal and created a system to connect to R3 and also the system alias. When I tried to do the user mapping I get the following error:

Portal Runtime Error

An exception occurred while processing a request for :

iView : pcd:portal_content/administrator/super_admin/super_admin_role/com.sap.portal.user_administration/com.sap.portal.user_mapping/com.sap.portal.userMappingAdmin/com.sap.portal.userMappingAdmin

Component Name : com.sap.portal.usermanagement.admin.UserMappingAdmin

User Mapping not fully available..

Exception id: 12:06_31/03/05_0003_3886350

See the details for the exception ID in the log file

Please help.

Sriram