Here is the error:
Invalid XmlnsDeclaration occurs in assembly 'Telerik.Windows.Controls.GridView, Version=2018.3.1016.1050, Culture=neutral, PublicKeyToken=5803cfa389c90ce7'. XmlnsDeclaration references a namespace 'Telerik.Windows.Controls.MultiColumnComboBox' that is not in the assembly.
It is reproducible only in Visual Studio 2010 SP1.
At this point not much else is known other than the stack trace. The stack trace suggests that this happens on selection done by dragging the mouse and perhaps the document is with incorrect structure.
Exception: [ArgumentNull_Generic]
Arguments:
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.50907.00&File=mscorlib.dll&Key=ArgumentNull_Generic
Parameter name: inline
at Telerik.Windows.Documents.Model.RadDocument.GetContainingAnnotationRanges[TRangeStart](Inline inline, Predicate`1 filter, Boolean inclusive)
at Telerik.Windows.Documents.DocumentPosition.get_IsPositionInSkipPositionRange()
at Telerik.Windows.Documents.DocumentPosition.get_IsValidPosition()
at Telerik.Windows.Documents.DocumentPosition.Validator.EnsureValidPosition(DocumentPosition position, Func`1 shouldSearchForward)
at Telerik.Windows.Documents.Selection.MouseSelectionHandler.UpdateSelectionAndCaretPosition()
at Telerik.Windows.Documents.Selection.MouseSelectionHandler.RegisterDocumentMouseMove(Point position, SourceType source)
at Telerik.Windows.Documents.UI.DocumentPresenterBase.HandleMouseMoveOnPosition(Point position, SourceType source)
at Telerik.Windows.Documents.UI.DocumentPresenterBase.Owner_MouseMove(Object sender, MouseEventArgs e)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
When placed in a RadWindow, there is a LayoutCycle exception if the layout transform is re-applied when the content of the LCC is not visible. Workaround: Set MinHeight to the RadWindow.
The LocalizationManager doesn't apply the ResourceKey if the Content/Text properties are defined in XAML between the opening and closing tag of the control - for example Button or a TextBlock control.
If the Telerik.Windows.Controls assembly is referenced from a local folder whilst the Telerik.Controls.Navigation.dll is referenced from the installation folder, as soon as a control from Navigation is added in a UserControl, a design-time exception is raised. The excpetion is "Error HRESULT E_FAIL has been returned from a call to a COM component." StackTrace: at MS.Internal.XcpImports.CheckHResult(UInt32 hr) at MS.Internal.XcpImports.Collection_InsertValue[T](PresentationFrameworkCollection`1 collection, UInt32 index, CValue value) at MS.Internal.XcpImports.Collection_InsertDependencyObject[T](PresentationFrameworkCollection`1 collection, UInt32 index, DependencyObject value) at System.Windows.PresentationFrameworkCollection`1.InsertDependencyObject(Int32 index, DependencyObject value) at System.Windows.Controls.UIElementCollection.InsertInternal(Int32 index, UIElement value)
Fix the animation of the RadWrapPanel. As a workaround: <telerik:RadWrapPanel > <i:Interaction.Behaviors> <ei:FluidMoveBehavior AppliesTo="Children" Duration="0:0:0.4"> <ei:FluidMoveBehavior.EaseY> <CubicEase EasingMode="EaseOut"/> </ei:FluidMoveBehavior.EaseY> <ei:FluidMoveBehavior.EaseX> <CubicEase EasingMode="EaseOut"/> </ei:FluidMoveBehavior.EaseX> </ei:FluidMoveBehavior> </i:Interaction.Behaviors> </telerik:RadWrapPanel> Check the attached project.