Sending with Thunderbird No Longer Works

This is actually a Windows problem rather than a Enterprise Organizer Pro problem. Here’s the cause: occasionally when Thunderbird issues a new release, the new version fails to register properly with Windows. As a result, it’s no longer recognized as the default email client. Here’s a Thunderbird forum that discusses the problem and solutions:

http://forums.mozillazine.org/viewtopic.php?f=28&t=1312395