ColVis not responding to checking or unchecking.

Let me start out by saying that I'm completely lost when it comes to this stuff. I learn and accomplish by several runs of trial & error.

I'm assuming this is an easy fix because I have no idea what I'm doing, but we'll see.

DataTables and ColVis (nightly) are up to date. I've implemented ColVis to the best of my knowledge, and it recognizes my table headers, but checking or unchecking those table headers does absolutely nothing. The error console logs this:

TypeError: 'null' is not an object (evaluating 'd.aoColumns')

The website in question is: http://ncwa.net/includes/classes/teams/wrestler_status_2.php
And the debugger: http://debug.datatables.net/asimon

$(document).ready(function(){
$('.display').dataTable({
"bLengthChange": false,
"bPaginate": false,
"bFilter": false,
"bInfo": false,
"sDom": 'C<"clear">lfrtip',
}
);
});

Please help this hopeless guy!

-Chase