jQuery Grid Plugin - jqGrid

Hi,

Great plugin.  However, I am currently having an issue with the getRowData method call in IE.  Given this grid definition:

jQuery("#list").jqGrid({
                url: '/Warehouse/CatalogEditor/GridData/',
                height: 400,
                datatype: 'json',
                mtype: 'GET',
                colNames: ['WarehouseID', 'Stock Number', 'Name', 'Description', 'Items In Stock', 'In Stock'],
                colModel: [
          { name: 'WarehouseID', index: 'WarehouseID', width: 16, align: 'left' },
          { name: 'StockNumber', index: 'StockNumber', width: 95, align: 'left' },
          { name: 'Name', index: 'Name', width: 200, align: 'left' },
          { name: 'Description', index: 'Description', width: 285, align: 'left' },
          { name: 'ItemsInStock', index: 'ItemsInStock', width: 75, align: 'left' },
          { name: 'InStock', index: 'InStock', width: 75, align: 'left'}],
                multiselect: true,
                sortname: 'StockNumber',
                sortorder: "desc",
                viewrecords: true,
                imgpath: '/scripts/themes/basic/images',
                forceFit: true,
           }

and this call:

var ret = jQuery("#list").getRowData(rowId);      

I get an 'undefined' when I try and look at any of the properties of the ret variable.  This works just fine in FF, but not in IE.  I'm using jQuery 1.3.2, jqGrid 3.4.4 and IE 7.

Anyone have any ideas?  Is this a fix that's in the newest beta?