jQuery Grid Plugin - jqGrid

Hello

I have just upgraded jQuery (1.5.2) jQuery UI (1.8.12) and jQgrid (4.0.0) so that I can take advantage of some of the latest features like local search. The one problem I am having is that though the grid loads fine and the search works beautifully, clicking on a row causes an error in ie7 of 'className is null or not an object' on line 129.

Before performing the upgrade, I already had the grid loading and was able to click on a row with no error. I have checked every upgraded file to make sure I have the correct versions. I have also checked other applications where we use jQgrids(but no search) and those don't give the error. I have also checked the data being returned to see if I added something that could break the js. I also commented out the last four columns to see if the urls, style info, or spans as breaking something in the grid and again I still get the error.

here is my grid:

jQuery.noConflict();
                
jQuery(document).ready(function(){

        jQuery('#spinner2').show();

                jQuery("#grid").jqGrid({
                    type:'GET',
                    url: "dataFeeder.jsp?sql=<%=intelliSql%>&db_connection=DPDCSQL",
                    datatype: "json",
                    jsonReader : {
                        repeatitems: true,
                        root: "rows",
                        page: "page",
                        total: "total",
                        records: "records",
                        cell:"cell",
                        id: "0″
                    },
                     colNames: ["Region","Substation","Feeder","Switch","Type","Status","Prg","PrgT1","PrgT2","Edit"],
                     colModel:[
                                 {"name":"Region", "index":"Region" ,"align": "center", "sortable": true, "width": 75, "hidden":false, "key":true, "search":true},
                                 {"name":"Substation", "index":"Substation","align": "center", "sortable": true, "width": 100, "hidden":false, "search":true},
                                 {"name":"Feeder", "index":"Feeder","align": "center", "sortable": true, "width": 75, "hidden":false, "search":true},
                                 {"name":"Switch", "index":"Switch","align": "center", "sortable": true, "width": 75, "hidden":false, "search":true},
                                 {"name":"Type", "index":"Type","align": "center", "sortable": true, "width": 100, "hidden":false, "search":true},
                                 {"name":"Status", "index":"Status","align": "center", "sortable": true, "width": 100, "hidden":false, "search":true},
                                 {"name":"Prg", "index":"Prg","align": "center", "sortable": true, "width": 45, "hidden":false, "search":false},
                                 {"name":"PrgT1", "index":"PrgT1","align": "center", "sortable": true, "width": 45, "hidden":false, "search":false},
                                 {"name":"PrgT2", "index":"PrgT2","align": "center", "sortable": true, "width": 45, "hidden":false, "search":false},
                                 {"name":"Edit", "index":"Edit","align": "center", "sortable": true, "width": 35, "hidden":false, "search":false}
                    ],
                     pager: jQuery('#pager'),
                     toppager: true,
                     rowNum: 20,
                     altRows:true,
                     altclass:'alternate_row',
                     width: '750',
                     height:'450',
                     rowList: [20, 50, 100, 200],
                     loadtext:'<img src="/_includes/images/progressbar.gif"> Loading Data….',
                     viewrecords: true,
                     repeatitems: true,
                     shrinkToFit: false,
                     loadonce: true,
                     autowidth:false,
                     sortname: 'region',
                     sortorder: 'asc',
                     loadError: function(xhr,status,error){
                     alert(xhr.status + ' error ' + error);
                }
             });
            jQuery("#grid").jqGrid('filterToolbar',{stringResult: true,searchOnEnter : false});
            jQuery("#grid").jqGrid('navGrid','#pager',
                {  view: false, del: false, add: false, edit: false, excel:false, search: false },
                {}, // default settings for edit
                {}, // default settings for add
                {}, // delete
                {}, // search options
                {}
            );
            jQuery("#grid").jqGrid('navButtonAdd','#pager',{caption:"Excel",
                onClickButton:function(){
                    window.open("../_includes/output_excel.jsp");
                } });
               jQuery('#spinner2').hide();

        });

Html of grid:
   <table id="grid" ></table>
    <div id="pager"></div>

Here is some sample JSON data

{"rows":[
    {"rowID":0,"cell":["REGION1","SUBSTATION1","123456","A41146","Switch","Constructed","<span style='background:lightgrey;color:lightgrey; width:100px;'>one</span>","<span style='background:green;color:green; width:100px;'>two</span>","<span style='background:green;color:green; width:100px;'>two</span>","<a href='switchUpdate.jsp?mode=getValues&switch=A41146'><img src='../_includes/images/edit.gif'/></a>"]},
    {"rowID":1,"cell":["REGION1","SUBSTATION1","123456","A41148","Switch","Proposed Install","<span style='background:lightgrey;color:lightgrey; width:100px;'>one</span>","<span style='background:green;color:green; width:100px;'>two</span>","<span style='background:green;color:green; width:100px;'>two</span>","<a href='switchUpdate.jsp?mode=getValues&switch=A41148'><img src=../_includes/images/edit.gif'/></a>"]},
    {"rowID":2,"cell":["REGION1","SUBSTATION1","67890","A40890","Switch","Constructed","<span style='background:lightgrey;color:lightgrey; width:100px;'>one</span>","<span style='background:green;color:green; width:100px;'>two</span>","<span style='background:green;color:green; width:100px;'>two</span>","<a href='switchUpdate.jsp?mode=getValues&switch=A40890'><img src='../_includes/images/edit.gif'/></a>"]}
],"page":"1″,"records":3,"sidx":"Region","sord":"asc"}

Any help will be greatly appreciated.

Thank you

Joan