sourcetree does not start anymore

[Jan Eggers]

hi there my sourcetree doesnt start anymore. i upgraded to 2.3.1 and now it doesnt start. version app-2.1.11 seems to work just fine. i uninstalled and reinstalled but the issue persists. 

looking at the log it looks like a bug, trying to show notification before mainwindow is opened.

here is the log:

ERROR [2017-09-20 07:50:44,347] [1] [SourceTree.Utils.UpdateHelper] [GetSquirrelStagedUserId] - Couldn't read staging user ID
ERROR [2017-09-20 07:51:13,002] [1] [SourceTree.App] [.ctor] - finish EnsureSquirrelExecutionStubIsCopied
ERROR [2017-09-20 07:51:14,941] [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)

[Jan Eggers · Accepted solution]

i installed the old version again and it gives me a warning about invalid dictionaries if i delete them i can install the update afterwards and it starts. 

so my issue is fixed but there is a nullpointer exception in startup checks

[Scott Vitale]

Worked for me too, thanks!