NullReferenceException: Object reference not set to an instance of an object.
StackTrace:
   at SHqiqrx70pg1tiXdFdsk.b2NWUnx7lYAo2ZFMS2pc.End()
   at Quicker.App.zS4GbCl9NJ(Object  , ExitEventArgs  )
   at System.Windows.Application.OnExit(ExitEventArgs e)
   at Quicker.App.OnExit(ExitEventArgs e)
   at System.Windows.Application.DoShutdown()
   at System.Windows.Application.ShutdownImpl()
   at System.Windows.Application.ShutdownCallback(Object arg)
   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)