Generation from DLL containing reference to WindowsBase.dll

[mkopacka]

I have library project with the classes. The project has <UseWPF> set to true as it uses WPF types.
I'd like to generate some classes from such DLL, but it throws an exception of:

that means, that I tried to include WindowsBase into the assemblies list. However, it requires also PresentationFramework and PresentationCore and if I add these, I receive an error about bitness problem.

My tgconfig looks currently like this:

{
  "generationSpecs": [ "MyGenerationSpec" ],
  "assemblies": [
    "WindowsBase.dll",
    "PresentationFramework.dll",
    "PresentationCore.dll",
    "bin/debug/net6.0/Generator.dll"
  ]
}

public class MyGenerationSpec : GenerationSpec
{
    public MyGenerationSpec()
    {
        AddClass<MyClassToBeGenerated>();
    }
}

I am unable to find out how to affect this. What is proper procedure for this case? I tried to set project to x86/x64/Any CPU so it is most likely about the tool and DLL. PresentationCore/PresentationFramework are platform-agnostic.

Thank you