Wrong security creds error: MSC

Hi !

We're in the process of completing our MSC setup for a standalone Java system.

Step 7-->Finalize Configuration-->Register ADC Collector gives the below error:

Solman 7.1: SP 12

Java 7.40 Portal system: SP 7

We've used the "Administrator" user in "Enter System Parameters".

The Test Logon works Ok too.

This user has the Administrator role as per Note 1857914.

I've even restarted the Activity collector services from NWA...

Please help advise

Thanks a lot !

saba.