Chamando MapsDirectionTask

gistfile1.cs

private void Address_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            try
            {
                MapsDirectionsTask mapsDirectionsTask = new MapsDirectionsTask();

                GeoCoordinate CoordenadaFinal = new GeoCoordinate(LatItem, LngItem);
                LabeledMapLocation EndPoint = new LabeledMapLocation(PanoramaDetailItem.Title.ToString(), CoordenadaFinal);
                
                mapsDirectionsTask.End = EndPoint;

                // If mapsDirectionsTask.Start is not set, the user's current location is used as the start point.

                mapsDirectionsTask.Show();
            }
            catch (Exception erro)
            {
                MessageBox.Show(erro.ToString());
            }
        }       

Message:

Type 'Newtonsoft.Json.Linq.JObject' with data contract name 'ArrayOfKeyValueOfstringJTokeneJCYCtcq:http://schemas.microsoft.com/2003/10/Serialization/Arrays' is not expected. Add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.