Jquery NoConflict Problem
Try and call method `prettyPhoto’ when DOM is ready, replace your code: jQuery.noConflict() jQuery(function(){ jQuery(“a[rel^=’prettyPhoto’]”).prettyPhoto(); }); with this: jQuery(document).ready(function($) { $(“a[rel^=’prettyPhoto’]”).prettyPhoto(); }); Also ‘Paid Downloads’ plugins enqueues latest version of jQuery used by WordPress it’s 1.6.1, it would be better if you register same version of jQuery from Google-CDN as WordPress does