- ago
Hi,

I keep finding this exception:
CODE:
System.NullReferenceException: Object reference not set to an instance of an object. at WealthLab.WPF.MDIChild.set_WindowState(WindowState value) at WealthLab.WPF.MDIContainer.set_TopmostWindow(MDIChild value) at WealthLab.WPF.MDIContainer.BringToTop(MDIChild child) at WealthLab.WPF.MDIChild.PrepareCandidate(Object init, MouseButtonEventArgs connection) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(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)


This usually happens with strategies that I find with the Strategy Evolver: eventually I click to open and better analyse some strategy; then I minimize the window, with the Strategy Evolver still running; eventually, this exception then happens a while after maximizing the strategy again (not in a deterministic way, as far as I can see): no matter where I click, it just keeps popping and I am not even able to save the strategy for safekeeping.

I am running a fresh installation with all latest updates; and only the WL extensions, no third party ones, at this point. Unfortunately, I still didn't find a proper way of reproducing it: it keeps happening, but seems to be random... When it does happen, the only way to continue seems to be shutting down WL8.
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- ago
#1
It just happened again after the previous shutdown of WL: apparently it's not even related to the Strategy Evolver as I thought. This time, I open a few random windows (couple of charts, strategy ranking and a couple of strategy backtests) and after tiling them vertically, it started happening again...

Any idea? As I mentioned, this is a fresh installation of WL8, on a fresh windows 11 installation too. System wise, the only thing that I am doing differently is the use of font scaling (125%).
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- ago
#2
Thanks for the report, I'll work on this.
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