Win32Exception at MS.Win32.SafeNativeMethods.SetTimer(HandleRef hWnd, Int32 nIDEvent, Int32 uElapse) at System.Windows.Threading.Dispatcher.SetWin32Timer(Int32 dueTimeInTicks) at System.Windows.Threading.Dispatcher.UpdateWin32TimerFromDispatcherThread(Object unused) at System.Windows.Threading.Dispatcher.PromoteTimers(Int32 currentTimeInTicks) at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) 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)