[Solved] Complex type in Telerik Grid MVC

[Claudio]

Hi...
I´m trying build a grid, using NHibernate and Telerik Grid (Biding Ajax), however when i using complex type the Controller return Internal Server Error 500.
can Anyone help me?
My Class and the grid are Bellow...

public class Instalacao{
...       
    [UIHint("InstalacaoView")]      
    public virtual Instalacao InstalacaoPai { get; set; }
    [UIHint("OrgaoMenorView")]
    public virtual Orgao OrgaoMenor { get; set; }
...
}

...

[GridAction]

        public ActionResult _AjaxBinding()

        {

             //BpManterInstalacao Return Instalacao´s List

            IEnumerable<Instalacao> lista = new BpManterInstalacao().GetAll();

            return View(new GridModel<Instalacao>

            {

                Data = lista

            });

        }

...

<%= Html.Telerik().Grid<Instalacao>()
        .Name("Grid")
        .Columns(columns =>
        {
            columns.Bound(o => o.Id);
            columns.Bound(o => o.InstalacaoPai);
            columns.Bound(o => o.Nome);
            columns.Bound(o => o.OrgaoMenor);
        })
        .DataBinding(dataBinding => dataBinding.Ajax().Select("_AjaxBinding", "Grid"))
        .Pageable()
        .Sortable()
        .Scrollable()
        .Groupable()
        .Filterable()
%>