Excel AddIn written in C#, .NET4.0, VS2010, When a ribbon is clicked, the exceptio is thrown.
In ribbon click event handler, I basically initialize a WPF window and ShowDialog
Name:InvalidOperationException Message:Recursive call to Automation Peer API is not valid. Target:System.Collections.Generic.List`1[System.Windows.Automation.Peers.AutomationPeer] GetChildren() Stack: at System.Windows.Automation.Peers.AutomationPeer.GetChildren() at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer) at MS.Internal.Automation.ElementProxy.StaticWrap(AutomationPeer peer, AutomationPeer referencePeer) at System.Windows.Automation.Peers.AutomationPeer.UpdateChildrenInternal(Int32 invalidateLimit) at System.Windows.Automation.Peers.AutomationPeer.UpdateChildren() at Microsoft.Windows.Automation.Peers.DataGridItemAutomationPeer.GetChildrenCore() at System.Windows.Automation.Peers.AutomationPeer.EnsureChildren() at System.Windows.Automation.Peers.AutomationPeer.GetChildren() at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent) at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer) at MS.Internal.Automation.ElementProxy.StaticWrap(AutomationPeer peer, AutomationPeer referencePeer) at System.Windows.Automation.Peers.AutomationPeer.ProviderFromPeer(AutomationPeer peer) at System.Windows.Automation.Peers.AutomationPeer.RaisePropertyChangedEvent(AutomationProperty property, Object oldValue, Object newValue) at Microsoft.Windows.Controls.DataGridRow.OnIsSelectedChanged(Object sender, DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at Microsoft.Windows.Controls.DataGridRow.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.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal) at System.Windows.DependencyObject.SetCurrentValueInternal(DependencyProperty dp, Object value) at System.Windows.Controls.Primitives.Selector.ItemSetIsSelected(Object item, Boolean value) at System.Windows.Controls.Primitives.Selector.OnGeneratorStatusChanged(Object sender, EventArgs e) at System.Windows.Controls.ItemContainerGenerator.SetStatus(GeneratorStatus value) at System.Windows.Controls.ItemContainerGenerator.Generator.System.IDisposable.Dispose() at System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint) at Microsoft.Windows.Controls.Primitives.DataGridRowsPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at System.Windows.ContextLayoutManager.UpdateLayout() at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg) at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork() at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Window.ShowHelper(Object booleanBox) at System.Windows.Window.Show() at System.Windows.Window.ShowDialog() at CommodityAddIn.Connect.ShowLaunchUI(Functions selectedFunction) at CommodityAddIn.Connect.LIMSRBtnClick(CommandBarButton Ctrl, Boolean& CancelDefault)
