System.InvalidOperationException: Sequence contains no elements
at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
at DPTK.Boot.Web.BootControls.bVideoDetalle.GenerarVideoHTML5(ResultadoCarreraCorredor oResCarrCorr)
at DPTK.Boot.Web.BootControls.bVideoDetalle.Page_Load(Object sender, EventArgs e)