Error with Visual Studio

[ruina]

Hello,
I'm trying to debug a Backtest with Visual Studio.
When I run the backtest normally, it finish correctly, and the log tab is clean, but when I attach the Visual Studio, and run the Backtest, the VS crash with the next exception:

System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=NinjaTrader.Core
StackTrace:
at NinjaTrader.NinjaScript.NinjaScriptBase.SetState(S tate state)
at NinjaTrader.Gui.NinjaScript.StrategyRenderBase.Set State(State state)
at NinjaTrader.NinjaScript.NinjaScriptBase.Finalize()

I've followed this help https://ninjatrader.com/support/help..._debugging.htm

Could you point me how to find the error?

Thank you in advance.

[NinjaTrader_ChelseaB]

Hello ruina,

Are you able to reproduce using the SampleMACrossover included with NinjaTrader?

Are you using NinjaTrader 8.0.25.0?

[ruina]

Hello Chelsea,
the version is 8.0.24.1 64-bit, with VS 2019

Running SampleMACrossover ends with the same error, but it enters in OnBarUpdate method, my Strategy not.

[NinjaTrader_ChelseaB]

Hello ruina,

Try updating to 8.0.25.0 and see if the error still occurs.

http://ninjatrader.com/GetStarted

What version of visual studio are you using?

[ruina]

The same error with version 8.0.25.0 and MACrossover.

The Visual Studio version is: Microsoft Visual Studio Community 2019 Version 16.10.3

But two-three weeks ago I've tested and it worked, and I have not updated anything. It's weird.

[NinjaTrader_ChelseaB]

Hello ruina,

You may try a full uninstall and re-install of Visual Studio and a clean environment for NinjaTrader.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/96481-ninjatrader-crashes-when-exporting-an-indicator-open-source?p=783683#post783683

[ruina]

If I've attached VS, and I compile from NT, I've got the same Exception. Only compile, not run.

Then it looks like the problem is with VS, but I've installed VS 2022, opened the solution, attach to NT, and I've run the backtest with the same result.

Maybe the issue is with some windows update, do you have a site with issues with the windows updates?

[NinjaTrader_ChelseaB]

Hello ruina,

May I confirm this was with a new NinjaTrader environment folder?

I'm not aware of any windows update that would cause this behavior. If you do start removing updates and find one that resolves, I would like to note this in our internal tracking software.

[ruina]

Yes, I confirm that is a new environment folder in the folder
I've installed a new NinjaTrader in my PC, and clean the folder
C:\Users\MyUserName\Documents\NinjaTrader 8

Now, when I've attached the NinjaTrader process, the error is:

An unhandled exception of type 'System.ExecutionEngineException' occurred in Unknown Module.

But I don't have time to run the backtest, it appears only with attach the process from VS. It's weird.

[NinjaTrader_ChelseaB]

Hello ruina,

This sounds like it might be an installation issue with Visual Studio.

Try uninstalling and re-installing Visual Studio 2019 and .NET as suggested in post #6.

[UltraNIX]

I remember having a similar problem, and yes, it was solved by re-installing Visual Studio.

[ruina]

I've reinstalled the NinjaTrader and it works.

Reading this post in stackoverflow about the C# exception, the third answer talks about "Use Managed Compatibility Mode", then I've remembered that the first time that I've attached VS, I didn't enabled the "Debug Mode" in NinjaScript Editor. It looked like a wrong compiled dll.

After that, now I can run and debug the initial code.

Thanks to all.