NT8 Crashes with odd exception

[nicanor.babula]

Hi there,

Every now and then, my NT8 v8.0.5.2 64-bit (Multi-Broker) crashes, especially when I try to activate a new window or to start/stop a strategy, click around, etc. It's frustrating, because this could happen while in position and could result in ugly situation.

Could you help me fix this?

Thanks!

Here's the exception I got out of the traces (I attached logs and traces too):

2017-03-28 09:33:59:718 *************** unhandled exception trapped ***************
2017-03-28 09:33:59:718 The specified Visual is not a descendant of this Visual.
2017-03-28 09:33:59:718 System.InvalidOperationException: The specified Visual is not a descendant of this Visual.
   at System.Windows.Media.Visual.TrySimpleTransformToAncestor(Visual ancestor, Boolean inverse, GeneralTransform& generalTransform, Matrix& simpleTransform)
   at System.Windows.Media.Visual.InternalTransformToAncestor(Visual ancestor, Boolean inverse)
   at ActiproSoftware.Windows.Controls.SyntaxEditor.Primitives.EditorRulerMargin.OnViewTextAreaLayout(Object sender, TextViewTextAreaLayoutEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at ActiproSoftware.Windows.Controls.SyntaxEditor.Primitives.EditorView.PerformViewLineLayout()
   at #m3b.#c4b.#Ekc(ITextSnapshot #I7b, ITextChange #g7b)
   at ActiproSoftware.Windows.Controls.SyntaxEditor.SyntaxEditor.OnDocumentTextChanged(Object sender, TextSnapshotChangedEventArgs e)
   at ActiproSoftware.Text.Implementation.TextDocumentBase.#O7c(#g7b #g7b)
   at NinjaTrader.Gui.NinjaScript.OutputWindow.OutputEditorControl.Clear()
   at NinjaTrader.Gui.NinjaScript.NinjaScriptOutput.Dispose(Boolean disposing)
   at NinjaTrader.Gui.NinjaScript.NinjaScriptOutput.Dispose()
   at NinjaTrader.Gui.NinjaScript.NinjaScriptOutput.OnClosed(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at NinjaTrader.Gui.Tools.NTWindow.OnClosed(EventArgs e)
   at System.Windows.Window.WmDestroy()
   at System.Windows.Window.WindowFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.PublicHooksFilterMessage(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

[NinjaTrader_ChelseaB]

Hello nicanor.babula,

Thanks for reporting the error.

I've removed your log and trace files from the forum as these can contain sensitive information. Moving forward, send these to platformsupport [at] ninjatrader [dot] com.
(I've got them this time)

Are you able to reproduce this error when testing the SampleMACrossOver script included with NinjaTrader?

[nicanor.babula]

Hi Chelsea,

Thanks for answering.

No, I am not able to reproduce, since it's random. It happens every now and then...

[NinjaTrader_ChelseaB]

Hi nicanor.babula,

Just to confirm, no matter how many tries this behavior cannot be reproduced using the SampleMACrossOver?

Are you able to reproduce more often using a custom strategy?

Are there any specific steps that can lead to the error?

I'd be happy to schedule a call with you, start with a clean environment and do some testing to see if we can reproduce the behavior and get a set of steps for reproducing.

If you would like to do this, please send an email to platformsupport [at] ninjatrader [dot] com.