The plugin you are using on the above site is not zen magnific, and the images are loading fine in my browser.
You may need to clear your catch.
If you have in fact swapped out zen magnific for another, it will be hard to diagnose the issue but my first guess would be a jQuery conflict in which case you could swap any jQuery code
from this:
Code:
$(document).ready(function() {
$('#whatever_class_or_id').whatever_function({
to:
Code:
var jq = $.noConflict();
jq(document).ready(function() {
jq('#whatever_class_or_id').whatever_function({