1.38a to 1.39b - Fatal Error Class 'notifier' not found

Hopefully this is an easy one:

Client's site will not load after upgrade to 1.39b. Error in debug states:

[10-May-2010 15:28:23] PHP Fatal error: Class 'notifier' not found in /home/myserver/public_html/store_new/includes/autoload_func.php on line 79

Lines 78-80 in autoload_func.php states the following:

      } else {
        $$objectName = new $className();
        $debugOutput .= '$' . $objectName . ' = new ' . $className . '();<br />';

Can anyone give me some assistance with this error? I had another upgrade for a different client from 138a to 139b without any issue, so I was surprised to get the blank page on this one.

Thanks in advance.

Christopher

The 'autoload_func' part is merely reporting that a problem exists. It itself is not the problem.

It would appear that one or more of the files in your /includes/classes/ folder haven't uploaded to your server properly. Check ALL of them.