Yup,

Had already reviewed this article to no avail.  I have no problem with right clicking any file such as .pdf's and .doc's and send them to e-mail where the e-mail is automatically created with the file attached.  However, I just realized when I go to send to e-mail from another 3rd party software (Adobe Acrobat 7 professional) I get an error sending to Thunderbird so it sounds like a Thunderbird issue with 3rd party apps.  I'll have to investigate from that direction.  Thanks for the help.