InvalidOperationException while trying to clic on a control

[arckain]

Message: La propriété '[Unknown]' ne pointe pas vers un DependencyObject du chemin '(0).(1)[0].(2)'.
Stacktrace:
à System.Windows.Media.Animation.Storyboard.VerifyPathIsAnimatable(PropertyPath path)
à System.Windows.Media.Animation.Storyboard.ClockTreeWalkRecursive(Clock currentClock, DependencyObject containingObject, INameScope nameScope, DependencyObject parentObject, String parentObjectName, PropertyPath parentPropertyPath, HandoffBehavior handoffBehavior, HybridDictionary clockMappings, Int64 layer)
à System.Windows.Media.Animation.Storyboard.ClockTreeWalkRecursive(Clock currentClock, DependencyObject containingObject, INameScope nameScope, DependencyObject parentObject, String parentObjectName, PropertyPath parentPropertyPath, HandoffBehavior handoffBehavior, HybridDictionary clockMappings, Int64 layer)
à System.Windows.Media.Animation.Storyboard.BeginCommon(DependencyObject containingObject, INameScope nameScope, HandoffBehavior handoffBehavior, Boolean isControllable, Int64 layer)
à System.Windows.VisualStateGroup.StartNewThenStopOld(FrameworkElement element, Storyboard[] newStoryboards)
à System.Windows.VisualStateManager.GoToStateInternal(FrameworkElement control, FrameworkElement stateGroupsRoot, VisualStateGroup group, VisualState state, Boolean useTransitions)
à System.Windows.VisualStateManager.GoToStateCommon(FrameworkElement control, FrameworkElement stateGroupsRoot, String stateName, Boolean useTransitions)
à System.Windows.Controls.Primitives.ButtonBase.ChangeVisualState(Boolean useTransitions)
à System.Windows.Controls.Control.UpdateVisualState(Boolean useTransitions)
à System.Windows.Controls.Control.OnVisualStatePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
à System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
à System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
à System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
à System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
à System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
à System.Windows.DependencyObject.SetValue(DependencyPropertyKey key, Object value)
à System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState, Action2 originChangedAction) à System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState, Action2 originChangedAction)
à System.Windows.ReverseInheritProperty.FirePropertyChangeInAncestry(DependencyObject element, Boolean oldValue, DeferredElementTreeState treeState, Action2 originChangedAction) à System.Windows.ReverseInheritProperty.OnOriginValueChanged(DependencyObject oldOrigin, DependencyObject newOrigin, IList1 otherOrigins, DeferredElementTreeState& oldTreeState, Action`2 originChangedAction)
à System.Windows.ReverseInheritProperty.OnOriginValueChanged(DependencyObject oldOrigin, DependencyObject newOrigin, DeferredElementTreeState& oldTreeState)
à System.Windows.Input.MouseDevice.ChangeMouseOver(IInputElement mouseOver, Int32 timestamp)
à System.Windows.Input.MouseDevice.PreNotifyInput(Object sender, NotifyInputEventArgs e)
à System.Windows.Input.InputManager.ProcessStagingArea()
à System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
à System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
à System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
à System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
à MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
à MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
à System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
à MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

[batzen]

Would need more details on this one. A sample app showcasing/reproducing the issue would be nice.
Due to the age of this issue i will close it. If you have more details feel free to re-open this issue.