Can't get WP Book to work, please help

Hi Guys Having a problem getting WPBook to work with Facebook, the app doesn’t seem to display anything. When create a post on my site it shows this after I hit publish – wp book No post id returned from Facebook, $fb_response was /n and $fb_page_type was and $wpbook_description was faljdhfjdfh dhf hdljhfhdafj and $my_title was facebook test

Any help if greatly appreciated.