An exception with the following StackTrace is thrown: at System.Windows.Threading.Dispatcher.VerifyAccess() at System.Windows.DependencyObject.GetValue(DependencyProperty dp) at Telerik.Windows.Data.FilterDescriptor`1.get_FilteringExpression() at Telerik.Windows.Data.FilterDescriptor`1.CreateFilterExpression(ParameterExpression parameterExpression) at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance) at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpression() at Telerik.Windows.Data.Expressions.FilterExpressionBuilder.CreateFilterExpression() at Telerik.Windows.Data.QueryableExtensions.Where(IQueryable source, CompositeFilterDescriptorCollection filterDescriptors) at Telerik.Windows.Data.QueryableCollectionView.CreateView()