Using Windows Live Mail Windows 7 64bit, FIREFOX, latest version receiving an error message when I click a link in Windows Live Mail.  A pop-up says "there was a problem sending the command to the program" Believe I removed ALL antivirus programs before installing Windows Security Essentials this morning. DH installed on his this am, too, using Vista and Windows Mail, removed same Avast I was using and no problems with links.  I can copy/paste the link and put it directly into Firefox and it works.   Do NOT want to use IE for my browser.