I don't use SDK. Only Telerik. I correctly understood, what shall add reference library System.Windows.Controls from SDK's pack?
Telerik Silverlight v. 2012.2.903.1050
Telerik.ReportViewer.Silverlight v. 6.1.12.611
{System.Windows.Markup.XamlParseException: The type 'GridSplitter' was not found because 'clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls' is an unknown namespace. [Line: 6 Position: 30] ---> System.InvalidOperationException: A ResourceDictionary '/Telerik.Windows.Themes.Transparent;component/Themes/Telerik.ReportViewer.Silverlight.xaml' cannot be found. Please make sure that references to the needed theme assemblies have been added to the project. ---> System.Exception: Error HRESULT E_FAIL has been returned from a call to a COM component.
w MS.Internal.XcpImports.CheckHResult(UInt32 hr)
w MS.Internal.XcpImports.SetValue(IManagedPeerBase obj, DependencyProperty property, String s)
w MS.Internal.XcpImports.SetValue(IManagedPeerBase doh, DependencyProperty property, Object obj)
w System.Windows.DependencyObject.SetObjectValueToCore(DependencyProperty dp, Object value)
w System.Windows.DependencyObject.SetEffectiveValue(DependencyProperty property, EffectiveValueEntry& newEntry, Object newValue)
w System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
w System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
w System.Windows.ResourceDictionary.set_Source(Uri value)
w Telerik.Windows.Controls.Theme.GetCachedResourceDictionary(Uri uri)
--- Koniec śladu stosu wyjątków wewnętrznych ---
w Telerik.Windows.Controls.Theme.GetCachedResourceDictionary(Uri uri)
w Telerik.Windows.Controls.Theme.GetResourceFromTheme(Theme theme, String controlAssembly, Type defaultStyleKeyType, Theme controlTheme)
w Telerik.Windows.Controls.Theme.GetResourceValue(Type defaultStyleKey, Theme theme, Theme controlTheme)
w Telerik.Windows.Controls.Theme.GetThemeStyle(Theme oldTheme, Type defaultStyleKey)
w Telerik.Windows.Controls.Theme.Apply(FrameworkElement element, Theme oldTheme)
w Telerik.Windows.Controls.StyleManager.OnThemeChanged(DependencyObject target, DependencyPropertyChangedEventArgs changedEventArgs)
w Telerik.Windows.PropertyMetadata.PropertyChangeHook.OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
w System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
w System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
w System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
w System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
w Telerik.Windows.Controls.StyleManager.SetTheme(DependencyObject element, Theme value)
--- Koniec śladu stosu wyjątków wewnętrznych ---
w System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
w ReState.View.ReportsView.InitializeComponent()
w ReState.View.ReportsView..ctor()}
Telerik Silverlight v. 2012.2.903.1050
Telerik.ReportViewer.Silverlight v. 6.1.12.611