My operating system is Win XP SP3. While I get the above error message, I can open my Address book and send and receive emails normally. The only effect appears to be that my system seems to work at glacial speed and can quickly 'hang' if I've been using OE6. There are also difficulties exporting files to Windows LiveMail, allegedly caused by suspected corruption of files in OE6. I'm also using ZoneAlarm Extreme Security but this has not caused any problems before with OE6. I believe that uninstalling and re-installing OE6 is possible but very complicated, but unless I can successfully export the existing files and address book, I cannot reasonably use an alternative. Any help gratefully received but the following don't appear to be solutions to my problem:http://support.microsoft.com/kb=239135http://support.microsoft.com/kb=191946 1 person got this answerI do too