Hi Masego,
The error message seems to indicate that the provided credentials are invalid. Was this working before for the user that you are attempting? Is the Authentication Type correct (ex: LDAP versus Enterprise etc.,) By default BI Launchpad does not expose the LDAP Auth Type, that's why I was curious if this was really an Enterprise account or something else.
Are you attempting this with the Administrator user or some other user?
And finally, are all the CABI components started? If you stop SIA, and start it after a few minutes, you should see about 20 new processes atleast. That's a very high level rule of thumb to ensure that CABI 4.x started fine.
_R