sortable callbacks not working

The start callback works, but the update/stop ones do not.

Here is my code:

$("#menudrawer").sortable({hoverClass: 'sorthover', change: function() { console.log("change");} });

What happens is the word change gets written to the firebug log, then an infinite number of errors (all the same) saying:

this.parentNode has no properties

http://kflocal/js/jquery.js

Line 23

End result: I cannot call any functions when an item is moved.