jQuery Collision Error

We recently noticed on a client site that NextGen Gallery was creating an error that was stopping our other scripts from working. The error is as follows:

Uncaught TypeError: jQuery.easing[jQuery.easing.def] is not a function

From file: http://www.momotion.com/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/lightbox/static/fancybox/jquery.easing-1.3.pack.js?ver=2.2.12

We were wondering if this is a simple update that needs to be made or if something like could be traced to another script issue? Has this or something like it happened before?

Note: We are disabling the plugin on the domain, but can re-activate it when it becomes necessary.

The page I need help with: [log in to see the link]