WP Supersized & Easy Fancybox Conflict

I spotted out the answer for this.

Here is the culprit the culprit: the jquery.animate-enhanced.js file that had been added since version 3.1.2 is creating the issue.

Comment out this line :

wp_register_script('jquery_animate_enhanced', content_url().'/plugins/wp-supersized/js/jquery.animate-enhanced.min.js',array('jquery'),self::supersized_jquery_animate_enhanced_version)

probably on line 55 in this file:
wp-content/plugins/wp-supersized/includes/WPSupersized.php

This is working for me now.

error code: 523