Hmm. So then what's the difference between
C:\Program Files (x86)\SmarterTools\SmarterStats\Service\ServerSettings.xml
and
C:\Program Files (x86)\SmarterTools\SmarterStats\MRS\App_Data\Config\AppConfig.xml
?
I noticed that ServerSettings.xml has tags of ErrorEmail and ErrorSMTP, both of which are blank.
The file AppConfig.xml has several tags with SMTP in the name, none of which are blank.