Only one tabletools button works.

$(document).ready( function () {
				$('.display').dataTable( {
					"bJQueryUI": true,
					"iDisplayLength": 50,
					"sPaginationType": "full_numbers",
					"sDom": '<"H"lfTr>t<"F"ip>',
					"oTableTools": {
						"aButtons": [
							"print", 
							"csv", 
							"pdf"
						]
					}
				});
			});