グループ内ランチャーアイテムを上下矢印UIで移動させると落ちる

ださい。

2016-05-10T09:55:59.442[F] CatchUnhandleException <C:\Users\sk\Documents\Programming\SharpDevelop Project\Pe\Pe\PeMain\App.xaml.cs(131)> , Thread: 1/Running, Assembly: PeMain, Version=0.78.0.27501, Culture=neutral, PublicKeyToken=null
 [MSG] インデックスは一覧の範囲内になければなりません。
パラメーター名:index   System.ArgumentOutOfRangeException: インデックスは一覧の範囲内になければなりません。
                                                パラメーター名:index
                                                   場所 System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
                                                   場所 System.Collections.ObjectModel.Collection`1.Insert(Int32 index, T item)
                                                   場所 ContentTypeTextNet.Pe.PeMain.ViewModel.Control.SettingPage.ToolbarSettingViewModel.MoveNode(Object o, Boolean isUp)
                                                   場所 MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
                                                   場所 System.Windows.Controls.Primitives.ButtonBase.OnClick()
                                                   場所 System.Windows.Controls.Button.OnClick()
                                                   場所 System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
                                                   場所 System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
                                                   場所 System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
                                                   場所 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
                                                   場所 System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
                                                   場所 System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
                                                   場所 System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
                                                   場所 System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
                                                   場所 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
                                                   場所 System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
                                                   場所 System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
                                                   場所 System.Windows.Input.InputManager.ProcessStagingArea()
                                                   場所 System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
                                                   場所 System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
                                                   場所 System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
                                                   場所 System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
                                                   場所 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
                                                   場所 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
                                                   場所 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
                                                   場所 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
                                                   場所 System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
                                                   場所 MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
                                                   場所 MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
                                                   場所 System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
                                                   場所 System.Windows.Window.ShowHelper(Object booleanBox)
                                                   場所 System.Windows.Window.ShowDialog()
                                                   場所 ContentTypeTextNet.Pe.PeMain.ViewModel.MainWorkerViewModel.<>c__DisplayClass137_0.<get_ShowSettingWindowCommand>b__1()
                                                   場所 ContentTypeTextNet.Pe.PeMain.ViewModel.MainWorkerViewModel.PausingBasicAction(Action action)
                                                   場所 MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
                                                   場所 System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)
                                                   場所 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
                                                   場所 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
                                                   場所 System.Windows.Threading.DispatcherOperation.InvokeImpl()
                                                   場所 MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
                                                   場所 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
                                                   場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
                                                   場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
                                                   場所 MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
                                                   場所 System.Windows.Threading.DispatcherOperation.Invoke()
                                                   場所 System.Windows.Threading.Dispatcher.ProcessQueue()
                                                   場所 System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
                                                   場所 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
                                                   場所 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
                                                   場所 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
                                                   場所 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
                                                   場所 System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
                                                   場所 MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
                                                   場所 MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
                                                   場所 System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
                                                   場所 System.Windows.Application.RunDispatcher(Object ignore)
                                                   場所 System.Windows.Application.RunInternal(Window window)
                                                   場所 ContentTypeTextNet.Pe.PeMain.App.Main()

Software: Pe
Version: 0.78.0.27501-4c888731b94a76116e10adb78c4a19dc49d4bb0a
BuildType: RELEASE
Process: 64
Platform: 64
OS: Microsoft Windows NT 6.2.9200.0
CLR: v4.0.30319

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