Hi Xin
I have issues with facebook tab the like button is not showing in products.
I opened a ticket in helpdesk but it has not been address because I don have points.
Very dishappointed have to pay for a buggy software and than have to pay to fix the bugs.
http://www.facebook.com/#!/pages/Uncion-Music-Librerias-Cristianas/192606204096372?sk=app_136267806421194
Saul