jQuery Grid Plugin - jqGrid

OS: Windows XP

Browser: FF3, FF3.5, IE7

Configuration

$.extend(
        true,
        $.jgrid.defaults,
        {
            mtype : 'POST',
            datatype : 'json',
            gridview : true,
           
            multiselect : true,
            multiboxonly : true,
           
            height : 'auto',
            autowidth : true,
           
            rowNum : 1000,
            rowList : [1000, 2000, 3000],
            viewrecords : true,
            pginput : true,
            pgbuttons : true
        }
    );

jQuery(document).ready(function(){jQuery('#jQGrid_List').jqGrid({"url":"\\/admin\\/navigationitems\\/data\\/timestamp\\/1246392896","colNames":["edit","id","name","url","language","parent"],"colModel":[{"name":"edit","index":"edit","width":"60","align":"center"},{"name":"id","index":"id","align":"center","key":true},{"name":"name","index":"name","align":"center"},{"name":"url","index":"url","align":"center"},{"name":"language","index":"language","align":"center"},{"name":"parent","index":"parent","align":"center","hidden":true}],"sortname":"id","sortorder":"desc","caption":"List","pager":"jQGrid_Pager","treeGrid":true,"treeGridModel":"adjacency","gridview":false,"treeReader":{"level_field":"_level","parent_id_field":"_parent","leaf_field":"_isLeaf","expanded_field":"_expanded"},"ExpandColumn":"name"}).navGrid('#jQGrid_Pager',{refresh:true, edit:false, add:false, del:false, search:false});});

I don't have a demo yet online, the sample is deep inside of an admin system.

Ok, but gridview is actually disabled... I completly removed the treeGrid option and still same problem...