DLL Hell

[Atomic]

We have created a custom dll which allows Tradestation 10(68) to work with NinjaTrader.Client.dll. It works in some cases and others not. Here are the instances:

OS	TS	NT	Status
Windows server 2019	10(68)	8.0.28.0	Good
Windows 11 (22621.1928)	10(68)	8.0.27.1	No good
Windows 11 (22621.1848)	10(68)	8.0.28.0	No good
Windows 11 (22621.1778)	10(68)	8.0.27.1	Good

Can anyone explain this? The no good means that the dll return C++ exception when called from Easylanguage.
Good means that the function return is as expected.

Copying the dll from one of the working instances to one of the non-working instances does no good.

[QuantKey_Bruce]

You probably have some differences in the .NET Frameworks between those installations or perhaps Visual C++ Runtimes. It could also be that something is blocking it that you are not aware of e.g. antivirus or antimalware.

[Atomic]

You probably have some differences in the .NET Frameworks between those installations or perhaps Visual C++ Runtimes. It could also be that something is blocking it that you are not aware of e.g. antivirus or antimalware.

.Net Frameworks are all the same. One of the machines producing the error is the one where the dll is created using VS 2022, so it should handling the C++. Initially, when created, this same machine would run the dll, but now it doesn't after some intervening updates of Ninjatrader and Windows.

[QuantKey_Bruce]

That does sound like a big ol' mess. Let us know what you find out please.

[Atomic]

This problem got resolved by using
C:\Windows\Microsoft.NET\Framework\v4.0.30319\rega sm.exe "C:\Program Files\NinjaTrader 8\bin\NinjaTrader.Client.dll" /codebase
instead of
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\re gasm.exe "C:\Program Files\NinjaTrader 8\bin\NinjaTrader.Client.dll" /codebase

This gets run from an elevated command prompt.

[Atomic]

One more thing. If you roll back from v8.1 to 8.0 you may need to use an uninstaller that will delete registry keys or manually go through and find any keys referencing 8.1 and delete them before the Ninjatrader.Client.dll can be used with the 8.0 version.

[QuantKey_Bruce]

Great. Thank you for letting us know what you found.

[NinjaTrader_Jesse]

Hello Atomic,

Just to provide a support response here, this would not be something our support could assist with. The dll which tradestation used to use is no longer supported for that use case so what you have developed would be something only you would be able to debug. The only supported way to use tradestation is through the email interface.