App crashes if to press alt several times

[AlenPelin]

App crashes if to press alt several times.

Application: SIM.Tool.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.ArgumentNullException
Stack:
at MS.Internal.Media.VisualTreeUtils.AsNonNullVisual(System.Windows.DependencyObject, System.Windows.Media.Visual ByRef, System.Windows.Media.Media3D.Visual3D ByRef)
at System.Windows.Media.VisualTreeHelper.GetChildrenCount(System.Windows.DependencyObject)
at Fluent.Internal.UIHelper.FindImmediateVisualChild[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.Windows.DependencyObject, System.Predicate`1<System.__Canon)
at Fluent.KeyTipService.GetBackstage()
at Fluent.KeyTipService.Show()
at Fluent.KeyTipService.ShowImmediatly()
at Fluent.KeyTipService.OnWindowKeyUp(System.Object, System.Windows.Input.KeyEventArgs)
at System.Windows.Input.KeyEventArgs.InvokeEventHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(System.Object, System.Windows.RoutedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(System.Object, System.Windows.RoutedEventArgs, Boolean)
at System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject, System.Windows.RoutedEventArgs)
at System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs)
at System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs, Boolean)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs)
at System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport)
at System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr, System.Windows.Input.InputMode, Int32, System.Windows.Input.RawKeyboardActions, Int32, Boolean, Boolean, Int32)
at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(System.Windows.Interop.MSG ByRef, System.Windows.Input.ModifierKeys)
at System.Windows.Interop.HwndSource.OnPreprocessMessage(System.Object)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
at System.Windows.Threading.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority, System.Delegate, System.Object)
at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.HwndSource+WeakEventPreprocessMessage.OnPreprocessMessage(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(System.Windows.Interop.MSG ByRef)
at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(System.Object)
at System.Windows.Application.RunInternal(System.Windows.Window)
at System.Windows.Application.Run(System.Windows.Window)
at SIM.Tool.App.Main()

[batzen]

Which version of Fluent are you using?
As far as i remember this issue was fixed by fixing #25

[AlenPelin]

Yes, the issue got resolved after upgrading - thank you