Latest version does not work in Windows 10 version 1709

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)}}