If adding the permission in the additional permissions does not work, this generally means that you have not submitted your action to Facebook for approval. In trying to set up actions on your site, you should be logging in with the administrator of your Facebook application and testing with that user. Other users won't have access to the action until you go through the approval process.
Follow these steps for testing your actions and submitting to Facebook.
www.sourcecoast.com/jfbconnect/docs/open...book-action-approval 
(#200) Requires extended permission: publish_actions
