The docs don't tell you how to setup the settings for each module...
the url in there is confusing as hell. But, I assume it needs to be the module inside your application. So, for Joomla it would be.
http://yoursite.com/components/com_c...etin.class.php
PLEASE CORRECT ME IF I AM WRONG HERE. I just changed this setting and I am now getting half of the login bit working.