"Invalid file identifier" error while code generation

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Anna Papasheva
Anna Papasheva 2020-9-8
回答： Dhruv 2025-6-2
I am using MATLAB 2019b and trying to generate a .dll file from a simulink model to integrate with Vector CANoe.
I also setted Microsoft Visual C++ 2019 as a c++ compiler.
I have chosen 'cn.tlc' in the code generation panel.
But when I am trying to generate code I am getting:
The call to cn_make_rtw_hook, during the after_tlc hook generated the following error: Invalid file identifier. Use fopen to generate a valid file identifier.
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Anna Papasheva
Anna Papasheva 2020-10-9
Hi,
I was trying to compile C++ but it is right to use C. I was able to do it successfully till today, but now I can not generate dll again. I don't have any errors but no dll either.

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Dhruv
Dhruv 2025-6-2
Hi,
I see you're running into the "Invalid file identifier" error when trying to build a model using the cn.tlc system target file. From what I've seen, this error often happens when the target file is set using a relative path. A good workaround is to try using the full absolute path to the cn.tlc file instead.
Additionally, CANoe is a tool developed by Vector. For more in-depth help with this or other CANoe-related issues, I'd recommend reaching out to Vector's technical support here:
https://www.vector.com/us/en/support-downloads/support/#c54331
I hope this helps!

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