KeyNotFoundException
   at System.Collections.Concurrent.ConcurrentDictionary`2.get_Item(TKey key)
   at Quicker.Settings.Pages.Tools.PowerKeysManagementPage.get_CurrentPowerKey()
   at Quicker.Settings.Pages.Tools.PowerKeysManagementPage.I7CP7iybMV(Object  , RoutedEventArgs  )
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)