The April 2006 patch for the Windows Address Book (or one of the related
patches) has left me unable to open any WAB file; I am prompted to reinstall
Outlook Express.

This is definitely a file related issue because I restored my registry to
before the patch and it was still broken. A Sytem Restore to April 16th
(before the patch) did fix it; but, the update reinstalled last night and it
is broken again.

The system is running XP Pro SP2 with all prior updates applied and has no
Spware, Trojan, Worm, or Virus issues.

Somebody didn't test thoroughly enough, guys! How do I fix it?