jQuery Grid Plugin - jqGrid

I know it's no help to you, but I've got the same issue upgrading from 3.6.2 to 3.6.5. Also using JSON. No data displayed.

There's clearly a serious breaking change somewhere!

This is my code that works beautifully in 3.6.2 (it's requesting the data correctly and getting exactly the same JSON data that works with 3.6.2):

         jQuery(document).ready(function() {
            var mygrid = $('#list').jqGrid({
                ajaxGridOptions: { contentType: "application/json; charset=utf-8″ },
                serializeGridData: function(postdata) {
                    postdata.contract_number = $.query.get("contract_number");
                    postdata.product_serial_number = $.query.get("product_serial_number");
                    postdata.conman_customer_id = $.query.get("conman_customer_id");
                    postdata.oracle_customer_number = $.query.get("oracle_customer_number");
                    postdata.coverage_template = $.query.get("coverage_template");
                    postdata.contract_origin = $.query.get("contract_origin");
                    postdata.status = $.query.get("status");
                    postdata.not_status = $.query.get("not_status");
                    postdata.tsslog_customer_id = $.query.get("tsslog_customer_id");
                    if (postdata._search == false) {
                        postdata.searchField = $.query.get("searchfield");
                        postdata.searchString = $.query.get("searchstring");
                        postdata.searchOper = $.query.get("searchoper");
                    }
                    if (postdata.filters == null) { postdata.filters = "";}
                    return JSON.stringify(postdata);
                },
                url: "webservices/contracts.asmx/contractlist",
                datatype: "json",
                mtype: "POST", // don't know why this is needed here and not on ajaxGridOptions like contentType
                onSelectRow: function(ids) {
                    getdetaildata(ids); //version that gets the data from the web service, including data from joined tables (comments and entitlements)
                    //showDetailsFromjqGridRow(ids); //version that extracts the data from the grid row, avoiding the need for another data pull
                },
                colNames: [
                'id',
                'Contract',
                'Line',
                'Eff',
                'Ver',
                'Status',
                'Start',
                'End',
                'Cov Template',
                'Serv Part No',
                'Product',
                'Prod Part No',
                'Serial No',
                'Description',
                'Term reason',
                'Term date',
                'Contract_origin',
                'Renewal date',
                'import_status',
                'conman_cust_id',
                'Created',
                'Updated',
                'Contact_name',
                'Contact_email',
                'Contact_role',
                'Level',
                'Cust contacts',
                '3rd pty contacts',
                'bill_to_num',
                'bill_to_name',
                'bill_to_addr',
                'ship_to_num',
                'ship_to_name',
                'ship_to_addr',
                'other_num',
                'other_name',
                'other_addr'
                ],
                colModel: [
                  { name: 'id', index: 'id', width: 15, hidden: true },
                  { name: 'contract_number', index: 'contract_number', width: 80, hidden: false },
                  { name: 'line_number', index: 'line_number', hidden: true, width: 30, align: "center" },
                  { name: 'effectivity_number', index: 'effectivity_number', hidden: true, width: 30, align: "center" },
                  { name: 'version_number', index: 'version_number', hidden: true, width: 30, align: "center" },
                  { name: 'status', index: 'status', width: 70, hidden: false },
                  { name: 'start_date', index: 'start_date', width: 55, hidden: false },
                  { name: 'end_date', index: 'end_date', width: 55, hidden: false },
                  { name: 'coverage_template', index: 'coverage_template', width: 100, hidden: false },
                  { name: 'service_part_number', index: 'service_part_number', width: 80, hidden: true },
                  { name: 'product_description', index: 'product_description', width: 100, hidden: false },
                  { name: 'product_part_number', index: 'product_part_number', width: 80, hidden: false },
                  { name: 'product_serial_number', index: 'product_serial_number', width: 100, hidden: false },
                  { name: 'contract_description', index: 'contract_description', width: 100, hidden: true },
                  { name: 'termination_reason', index: 'termination_reason', width: 100, hidden: true },
                  { name: 'terminated_date', index: 'termination_date', width: 65, hidden: true },
                  { name: 'contract_origin', index: 'contract_origin', width: 80, hidden: true },
                  { name: 'renewal_date', index: 'renewal_date', width: 55, hidden: true },
                  { name: 'import_status', index: 'import_status', width: 65, hidden: true },
                  { name: 'conman_customer_id', index: 'conman_customer_id', width: 65, hidden: true },
                  { name: 'created_date', index: 'created_date', width: 55, hidden: true },
                  { name: 'updated_date', index: 'updated_date', width: 55, hidden: true },
                  { name: 'contact_name', index: 'contact_name', width: 65, hidden: true },
                  { name: 'contact_email', index: 'contact_email', width: 65, hidden: true },
                  { name: 'contact_role', index: 'contact_role', width: 65, hidden: true },
                  { name: 'level', index: 'level', width: 65, hidden: true },
                  { name: 'customer_contacts', index: 'customer_contacts', width: 65, hidden: true },
                  { name: 'third_party_contacts', index: 'third_party_contacts', width: 65, hidden: true },
                  { name: 'bill_to_customer_number', index: 'bill_to_customer_number', width: 60, hidden: true },
                  { name: 'bill_to_customer_name', index: 'bill_to_customer_name', width: 100, hidden: true },
                  { name: 'bill_to_customer_address', index: 'bill_to_customer_address', width: 100, hidden: true },
                  { name: 'ship_to_customer_number', index: 'ship_to_customer_number', width: 60, hidden: true },
                  { name: 'ship_to_customer_name', index: 'ship_to_customer_name', width: 100, hidden: true },
                  { name: 'ship_to_customer_address', index: 'ship_to_customer_address', width: 100, hidden: true },
                  { name: 'thirdparty_customer_number', index: 'thirdparty_customer_number', width: 60, hidden: true },
                  { name: 'thirdparty_customer_name', index: 'thirdparty_customer_name', width: 100, hidden: true },
                  { name: 'thirdparty_customer_address', index: 'thirdparty_customer_address', width: 100, hidden: true }
                  ],
                pager: "#pager",
                rowList: [10, 20, 30, 50, 100],
                sortable: true,  // can drag and drop columns
                gridview: true,  // faster to load, less functionality
                caption: 'Contracts',
                loadError: function (xhr, st, err) {
                    jQuery("#rsperror").html(st + " " + xhr.status + " " + xhr.statusText);
                },
                loadComplete: function (xhr) {
                    jQuery("#rsperror").html("");
                },
                editurl: "contracts.asmx/edit1″,
                width: 775,
                height: 475
            });
            jQuery("#list").jqGrid('navGrid', '#pager', { edit: false, add: false, del: false, refresh: false, search: false },
                {}, // edit options
                {}, // add options
                {}, // del options,
                {}, // refresh options
                {}  // search options  – not active – using multiple search defined below
                );
            jQuery("#list").jqGrid('gridResize', {});
            jQuery("#list").jqGrid('navButtonAdd', '#pager', {
                buttonicon: "ui-icon-calculator",
                caption: "", title: "Select columns",
                onClickButton: function() { jQuery("#list").jqGrid('columnChooser'); }
            });
            jQuery("#list").jqGrid('navButtonAdd', '#pager', {
                buttonicon: "ui-icon-search",
                caption: "", title: "Search",
                onClickButton: function() { jQuery("#list").jqGrid('searchGrid', { multipleSearch: true }); }
            });
        });

function getdetaildata(myid) {
    var mynewid = $("#list").getCell(myid,'id');
    
    $.ajax({
      type: "POST",
      url: "webservices/contracts.asmx/contractrecord",
      data: "{id: " + mynewid + "}",
      contentType: "application/json; charset=utf-8″,
      dataType: "json",
      success: function(msg) {
          showdata(msg);
           }
    });
}     

I have this issue with the 3.6 demo files. If I use the included (3.6.1?) version of jqGrid, the demos work. If I swap in the 3.6.5 file from the website, I get no data back. This is independent of using the built in jQuery or using the latest jQuery and jQueryUI from Google's CDN.