Identical previous reports:
"Can't create message in Outlook Express" [Feb. 2006]
(after upgrading MS Office from 2000 to 2003)
http://www.hardwareanalysis.com/content/topic/55096/
Now here's a curious coincidence:
Quoting
http://support.microsoft.com/kb/917288
Error message when you open the Windows Address Book or you open Outlook Express
after you install cumulative security update 911567 (MS06-016)
After you install cumulative security update 911567 for Outlook Express
that is described in security bulletin MS06-016,
you may experience the following symptoms when you try
to open Outlook Express or the Windows Address Book:
You may receive an error message that resembles the following:
'unable to open address book. Address book may not be installed correctly'
When you open Outlook Express, you may be able to receive e-mail,
but you cannot send e-mail or reply to e-mail.
[End quote]
Why, those are _exactly_ the same symptoms as in the problem
which we have just experienced, and others have reported in the past.
Could it be that the Office 2003 update happened to include
essentially the same update as the above-referenced "security update"?
The symptom is said to be potentially due to a previously undetected
address book corruption, which the "security update" subsequently detects;
might this be why Windows Live Mail also refuses to import the original address book?