Make sure you use the correct settings to your Autofacebook module. Check and confirm the following are the same as to your application page ---> https://developers.facebook.com/apps/
$appapikey = ''; //you application id
$appsecret = ''; // your application secret
$user_id = ""; //the user id of your fan/product page
$app_url = "http://apps.facebook.com/htmyell_backend"; //url to your facebook application page
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