Crash when doing a multiple selection

I got this when I was doing various stuff (like stop tracking, adding, etc), while I was trying to stage the files before comitting them to Git.

ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,027] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:28,037] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRefreshStatusRequestedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with [BookmarkFolderNode]
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:31,489] [1] [SourceTree.Bookmarks.BookmarkManager] [RegisterAsRepositoryUpdatedEventHandler] - RegisterAsRepositoryUpdatedEventHandler called with null repo
ERROR [2016-02-17 16:32:50,850] [1] [SourceTree.AppRoot] [HandleCrash] - Fatal error
System.NullReferenceException: Object reference not set to an instance of an object.
at SourceTree.ViewModel.RepoTabViewModel.ToggleStaging(IFileStatusRecord fileStatusRecord) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\SourceTree.Api.UI.Wpf\ViewModel\RepoTabViewModel.cs:line 824
at SourceTree.ViewModel.MainWindowViewModel.ToggleStaging(IFileStatusRecord fileStatusRecord) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\ViewModel\MainWindowViewModel.cs:line 801
at SourceTree.ViewModel.MainWindowViewModel.<RegisterCommands>b__17_35(Object p) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\ViewModel\MainWindowViewModel.cs:line 146
at SourceTree.ViewModel.Utils.CommandSink.ExecuteCommand(ICommand command, Object parameter, Boolean& handled) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\SourceTree.Api.UI.Wpf\ViewModel\Utils\CommandSink.cs:line 112
at SourceTree.ViewModel.Utils.CommandSinkBinding.<set_CommandSink>b__3_1(Object s, ExecutedRoutedEventArgs e) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\SourceTree.Api.UI.Wpf\ViewModel\Utils\CommandSinkBinding.cs:line 46
at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
at System.Windows.Input.RoutedCommand.Execute(Object parameter, IInputElement target)
at System.Windows.Input.RoutedCommand.System.Windows.Input.ICommand.Execute(Object parameter)
at SourceTree.View.FileLists.AbstractCheckboxFileListView.CheckBox_OnPreviewMouseLeftButtonDown(Object sender, MouseButtonEventArgs e) in C:\projects\bitbucket.org\atlassian\sourcetreewin-prod\SourceTree.Api.UI.Wpf\View\FileLists\AbstractCheckboxFileListView.cs:line 57
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnPreviewMouseDownThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)