Object has not method 'Jcrop'

I’m getting the following JavaScript error when I try to add or edit pages.

Uncaught TypeError: Object [object Object] has no method 'Jcrop'

It’s reporting to be on post-new.php line 110 and appears to be coming from the following code.

/**
     * jClop
     */
	jQuery(document).ready(function($) {
		$(function(){
			$('#cropbox').Jcrop({
				minSize: [ , ],
				maxSize: [ ,  ],
				allowResize: true,
				setSelect:[ , , ,  ],
				onSelect: updateCoords
			});
		});

		function updateCoords(c)
		{
			$('#x').val(c.x);
			$('#y').val(c.y);
			$('#x2').val(c.x2);
			$('#y2').val(c.y2);
			$('#w').val(c.w);
			$('#h').val(c.h);
		};
	});

By itself it doesn’t appear to be a problem, but it is causing any other JavaScript calls on any add/edit page to fail which is causing problems with other plugins not being able to run their scripts.

http://wordpress.org/plugins/simple-responsive-slider/