i have a treegrid and i need to make it as editorGrid.
My treegrid is
var tree = new Ext.ux.tree.TreeGrid({
    title: 'Core Team Projects',
     height: 500,
    renderTo: Ext.getBody(),
      autoLoad:false,
    plugins: [editor],
      columns:[
        {
        header: 'Name',
        dataIndex: 'name',
        width: 230
    },{
        header: 'length',
        width: 150,
        sortType: 'asFloat',
        dataIndex: 'length'
    },{
        header: 'size',
        width: 150,
        sortType: 'asFloat',
        dataIndex: 'size'
    },{
        header: 'dataType',
        width: 150,
        dataIndex: 'dataType'
    },{
        header: 'extName',
        width: 150,
        dataIndex: 'extName'
    },{
        header: 'overlay',
        width: 150,
        dataIndex: 'overlay'
    },{
        header: 'qualified',
        width: 150,
        dataIndex: 'qualified'
    }],
    loader: myTreeLoader
});
and the editor which i used is
var editor = new Ext.ux.grid.RowEditor({
    saveText: 'Save',
    errorSummary : true,
    monitorValid: true,
    clicksToEdit: 1,
    // floating: true,
    shadow: true,
    layout: 'hbox',
    cls: 'x-small-editor',
    buttonAlign: 'center',
    baseCls: 'x-row-editor',
    elements: 'header,footer,body',
    frameWidth: 5,
    buttonPad: 3,
    focusDelay: 250,
    cancelText: 'Cancel',
    //commitChangesText: 'You need to Update or Cancel your changes',
    // errorText: 'Errors',
    defaults: {
        normalWidth: true
    }
});
it gives an error "Object doesn't support this property or method"
Could Someone pls give a solution