Weird Error Messages

sunmicroman

On my recently set up Vanilla forum some of my registered users are complaining of getting this whenever they type out a comment and then click the "Add Your Comments" button. I don't seem to be experiencing it myself nor my wife. We both use Firefox if that matters. One of the users experiencing the error is using IE. This is the error (Note: It looks like a problem with a configuration of the extension "Notify" I installed a while back. I have temporarily disabled it in order to see if that solves the problem. Could it be a permissions misconfiguration on my server?):

Notice: Undefined variable: Whispered in /home/forum/extensions/Notify/default.php on line 155

Notice: Undefined variable: test in /home/forum/extensions/Notify/default.php on line 200

Notice: Undefined variable: php_errormsg in /home/forum/library/Framework/Framework.Class.Email.php on line 146
A fatal, non-recoverable error has occurred
Technical information (for support personel):
Error Message
An error occurred while sending the email.
Affected Elements
Email.Send();
For additional support documentation, visit the Lussumo Documentation website at: lussumo.com/docs

Minisweeper

First guess since it's a sporadic error is that sometimes for some reason the mail sending method is unavailable. Are you using sendmail or SMTP?