$("fieldset#edit-path", context).setSummary is not a function, causes autocompletion to not work

In line 6 of pathauto.js a JS error is throw that $("fieldset#edit-path", context).setSummary is not a function

Erring code

$('fieldset#edit-path', context).setSummary(function (context) { 

This JS error causes Autocompletion fields to not be ran and I'm sure a myriad of other JS issues.