Windows 7: Windows 8 Thunderbird Error Message

I sent an email to my other account. I called it Test. Here's what it showed.

Sending Message - Test
Status = mail sent successfully
Progress 100%
(This stayed on the screen for 1 minute and 50 seconds)
In the lower left corner of the screen it says mail sent successfully
It did put it in the sent folder.
The email never made it to the destination email address.

If you send an email and cancel the sending email message you get the message.
There was an error saving the message to. Retry?
Click the ok Button and the message goes away.
It did put it in the sent folder.
The email did make it to the destination email address.



Any Help??

Any suggestions on this yet?