jQuery Grid Plugin - jqGrid

I keep getting this error c.p.colModel[f].formoptions is undefined when I try and update data on the dialog form.  I'm using jqGrid v3.7.2.

My data is plan stuf (i.e. name, email, phone number) so nothing out of the ordinary.  I've used jqGrid in the past for similar data updates and no problem.

Anyone got any ideas?   Here is my HTML page:

<link rel="stylesheet" type="text/css" href="css/main.css" media="screen" />
<link rel="stylesheet" type="text/css" href="css/ui.jqgrid.css" media="screen" />
<link rel="stylesheet" type="text/css" href="css/redmond/jquery-ui-1.8.4.custom.css" />
<script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.8.4.custom.min.js"></script>
<script type="text/javascript" src="js/grid.locale-en.js" ></script>
<script type="text/javascript" src="js/jquery.jqGrid.min.js" ></script>
<script type="text/javascript">
<!--
$.jgrid.no_legacy_api = true;
$.jgrid.useJSON = true;
$(function() {
    $("#list").jqGrid({
            url:'php/adminCalFunctions.php?nd='+new Date().getTime(),
            datatype:'json',
            colNames:['ID','Date','Time Slot','Event Name','Contact Number','Contact Email','Number of children','Comments'],
            colModel:[
                    {name:'id',index:'id', width:50},
                    {name:'booked_date',index:'booked_date', width:90, editable:false},
                    {name:'booked_time',index:'booked_time', width:80, editable:false},
                    {name:'party_name',index:'party_name', width:80, editable:true},
                    {name:'contact_number',index:'contact_number', width:80, editable:true},
                    {name:'contact_email',index:'contact_email', width:80, editable:true},
                    {name:'kids',index:'kids', width:80, editable:true},
                    {name:'comments',index:'comments', width:80, editable:true}
            ],
            rowNum:10,
            rowList:[10,20,30],
            pager:'#pager1',
            sortname:'id',
            viewrecords:true,
            sortorder:'desc',
            caption:'Test Caption'
    });
    $("#list").jqGrid('navGrid','#pager1',
    {}, //options
    {reloadAfterSubmit:true}, // edit options
    {reloadAfterSubmit:true}, // add options
    {reloadAfterSubmit:true}, // del options
    {} // search options
    );
    
});
// -->

</script>
</head>

This is trying to post to a php to write to a DB.