Webgui displays blank page after logon into WEBAS 640

1 - I've published SHUFFLER, SYSTEM, WEBGUI to INTERNAL

2 - Using FQDN

3 - SMICM is running and I'm using the correct port

4 - SICF activated ITS and Webgui services

I get the logon screen OK....but after entering user/password the browser briefly displays "Starting Application" then goes blank.

Any thoughts are appreciated.

Linwood