NullReferenceException: Object reference not set to an instance of an object. StackTrace: at Quicker.App.<>c__DisplayClass27_0.JMouaxEK7MFu2MVxl2mA(Object ) at Quicker.App.<>c__DisplayClass27_0.zxESwsA8L2E() 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)