The Facebook Connect cross-domain receiver URL (http://gwired.gwu.edu/MERLIN_VHOSTS/merlin/edit/index.php?a=page_edit&s=page&Page_ID=610&PHPSESSID=nlhmd1t09042d60gsk2uv316o5&fbc_channel=1) must have the application's Connect URL (http://www.facebook.com/) as a prefix. You can configure the Connect URL in the Application Settings Editor.