Connecting BW to EP for SSO

Hi There All

I have three R/3 backends connected to our portal using SSo and all works fine. I got a request in to connect our BW system to EP so I duly followed the same principles that I used for connecting the R/3 systems and the tests from the portal work fine.

However I have created an iView called BW reports which basically calls the following URL:

http://<BW Server hostname> :8000/sap/bw/bex

When I preview this iView I get the logon screen appearing, I have tried other transaction codes and still I get the logon screen.

Any help would be greatly appreciated