Using Outlook Express for Email. Everything was running fine. But now I can receive but not send email. Click on New Mail and I get an error message; There has been an error opening this message. An error has occurred. Click on Addresses; Unable to open the address book. The address book may not be installed properly. Sometimes when I click on Addresses the message is; The address book failed to load. Outlook Express is incorrectly configured, please reinstall. I have done a reinstall but the problem remains. Any help much appreciated.