Cannot read property '1' of null title-numeric

ryanyork

http://myclassprogress.com/responsive/results/testTitleSort.php
I am trying to get title-numeric to work on my dataTable but I keep running into this error, cannot read property '1' of null.
I read https://www.datatables.net/forums/discussion/comment/53697 but the patch recommended did not work. The error stopped generating but sorting did not work either.

Any help would be really appreciated and as always, Allan thanks for all you do!

[code]tableElement.dataTable({
sPaginationType: 'bootstrap',
oLanguage : {
sLengthMenu: '_MENU_ records per page'
},
"aoColumnDefs": [
{ "sType": "title-numeric", "aTargets": [ "title-numeric" ] }

],
[/code]

[code]


First Name
Last Name
Quiz Grade
Date
Benchmark Grade
Practice Score




Joe
Smith
44
09/24 at 4:23am
34
44


Joe
Smith
44
04/24 at 4:23am
34
44


Joe
Smith
44
10/24 at 4:23am
34
44


Joe
Smith
44
09/23 at 4:23am
34
44



[/code]