I have a wierd one going. The problem appears to be with Adobe Reader XI. If I "Send File" from withing Adobe Reader up pops Outlook 2010 and away we go but the email bounces. It says the destination address does not exist. If I open Outlook and browse for the attachment and send it without touching Acrobat Reader it works just fine.
The problem sure appears to be sending from Acrobat Reader. Any clues?