[Plugin:Easy Fancybox] does not work with custom template

There is a show-stopper blocking javascript error occurring:

Uncaught TypeError: $container.imagesLoaded is not a function

It’s coming from this snippet you have in your themes footer:

jQuery( document ).ready( function( $ ) {
    /* Masonry + Infinite Scroll */
    var $container = $('#grid-container');
    $container.imagesLoaded(function () {
        $container.masonry({
            itemSelector: '.post'
        });
    });
...

I suspect the lack of a div with id “grid-container” is causing this error. So either add an if statement or maybe simply remove the line var $container = $('#grid-container'); and then replace all $container with $('#grid-container')?