When trying to run SourceTree 2.3.1.0 from Windows 10 version 1709 (build 16299.19), it does not start. For about two seconds, I get a 'loading' mouse cursor, then nothing.

Here's a message from the log file:

ERROR [2017-10-23 09:12:39,921] [1] [SourceTree.App] [.ctor] - finish EnsureSquirrelExecutionStubIsCopied
ERROR [2017-10-23 09:12:40,062] [1] [SourceTree.App] [OnStartup] - Failed to start
System.NullReferenceException: Object reference not set to an instance of an object.
{{ at SourceTree.Notifications.NotificationsManager.SetOwner(NotificationDialogWindow notificationWindow)}}
{{ at SourceTree.Notifications.NotificationsManager.ShowNotificationDialog[T](NotificationDialogWindow notificationWindow, Tuple`2 customAction, VistaTaskDialogIcon icon)}}
{{ at SourceTree.Notifications.NotificationsManager.ShowNotificationDialog[T](String title, String message, Tuple`2 customAction, String cancelLabel, String suppressionSetting, Action`1 suppressionChangedAction, Object contentControl, String contentCommandLabel, Action contentAction)}}
{{ at SourceTree.Notifications.NotificationsManager.ShowNotificationDialogWithYesConfirmation(String title, String message, String details)}}
{{ at SourceTree.Configuration.WpfSpellCheckerPreFlightCheck.Run()}}
{{ at SourceTree.AppRoot.RunPreFlightChecks()}}
{{ at SourceTree.AppRoot.OnStartup(StartupEventArgs e)}}
{{ at SourceTree.App.OnStartup(StartupEventArgs e)}}