VS2012 XAML Design Time Exception

[Robert]

Hi,

I'm getting the following XAML design time exception in VS2012.

Exception

NullReferenceException: Object reference not set to an instance of an object.

Here's the stack trace:

   at Telerik.Windows.Controls.RichTextBoxUI.StatusBar.LayoutModeSelector.get_SelectedLayoutMode()
   at Telerik.Windows.Controls.RichTextBoxUI.StatusBar.LayoutModeSelector.set_SelectedLayoutMode(DocumentLayoutMode value)
   at Telerik.Windows.Controls.RichTextBoxUI.RadRichTextBoxStatusBar.OnDocumentLayoutModeChanged()
   at Telerik.Windows.Controls.RichTextBoxUI.RadRichTextBoxStatusBar.OnAssociatedRichTextBoxChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   at System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
   at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Run(Object arg)
   at MS.Internal.Data.DataBindEngine.OnLayoutUpdated(Object sender, EventArgs e)
   at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()

Any idea's what may be causing it?

Thanks,

Rob

[Boby]

Hi Robert,
Unfortunately we cannot reproduce the problem on our side. Could you try to isolated it in a sample project and send it to us for further investigation, or just post here some sample XAML that induces it?

Regards,
Boby
the Telerik team