Issue: My jqGrid pager shows Page 1 of NaN instead of the correct number of pages.

Fiddler shows that I am getting the correct json from my WCF call:

```
{"total":1,"page":1,"records":2,"rows":[{JDEVendorNumber":99999999,
 "VendorName":"Super   Vendor","BillID":"99999999wwerer                      ",
 "CommunityName":"Post Abbey                              ",
 "PrimaryAcctNumber":"wwerer","CommunityID":"600402","RecordID":8}]}

```

My grid setup is as follows:

```
$invoiceGrid.jqGrid({
        datatype: 'json',
        mtype: 'GET',
        url: url,
        colNames: ['Vendor Name', 'CommunityName', 'Primary Acct Nbr', 'BillID'],
        colModel: [
                        { name: 'VendorName', index: 'VendorName', width: 203, align: 'left' },
                        { name: 'CommunityName', index: 'CommunityName', width: 215, align: 'left' },
                        { name: 'PrimaryAcctNumber', index: 'PrimaryAcctNumber', width: 260, align: 'left' },
                        { name: 'BillID', index: 'BillID', hidden: true }
                     ],
        rowNum: 50,
        gridview: true,
        rowList: [10, 20, 30, 50],
        pager: $('#invoicepager'),
        sortname: 'PrimaryAcctNumber',
        viewrecords: true,
        sortorder: "asc",
        rownumbers: false,
        hidegrid: false,
        repeatitems: false,
        recordtext: 'Bill(s) {0} - {1} ',
        cell: "",
        height: "auto",
        loadComplete: function(data) {
           //alert('total is ' + data.responseText);
            if ($invoiceGrid.jqGrid('getGridParam', 'records') == 0) {
                NoRecordsFound();
            } else {
                SetSearchResultsInterface('bills');
            }

            EnableControl($search, true);
            Global.grdInitialized = true;
            $progressbar.hide();
        },
        jsonReader: {

            repeatitems: false,
            id: "RecordID"
        }
    }).navGrid('#invoicepager', { edit: false, add: false, del: false, search: false, refresh: false });

```

My data is displayed correctly but the pager shows NaN for total pages and total records. Any ideas? Thank you for your help