I was able to get past that error because I realized that the jqGrid.grouping.js was not in my autoloader.

I am still getting the same error on line 58 of the grid.grouping.js within the groupingPrepare function. It is trying to do a split and join function on a number and fails because the column I am grouping on is a Number…

I would imagine a simple fix of checking if it is a number or not or doing a toString() would do the trick…

Thanks,

Kaleb