Microsoft Dynamics CRM 4.0 Problem

Hello all,

I've configured a server03 VM with Exchange07, SQL05, etc

All supposedly configured correctly, no errors in the event logs.

Problem:
Upon trying to configure the client (Office 07) I get as far as entering the Intranet address as follows: https://server01/reportserver (Also tried https://server01/reportserver:443) and experience the following error messages:

"Client found response content type of ", but expected 'text/xml'. The request failed with an empty response."
then
"Mandatory updates for Microsoft Dynamics CRM could not be applied successfully. Try running the application again."

If I simply enter https://server01/ I advance a page but there are no organizations to select or view so I'm again, stuck.

Any ideas?
I can view the web page by pasting the url in ie. I can access the server etc