Referencing any C++/WinRT package from a C#/WinRT project causes "Failed to create CoreCLR" error

[Psychlist1972]

Describe the bug
No idea where the fault lies here, or where to look. It could be C++/WinRT, it could be C#/WinRT, or my code.

Simply referencing another C++/WinRT projection project from my .NET app is causing the app to immediately terminate with this error:

Failed to create CoreCLR, HRESULT: 0x80070057
The thread '.NET EventPipe' (0xa89c) has exited with code 2147516553 (0x80008089).

I never use anything in the lib. It's the presence of the reference which causes that. If I remove the NuGet package (which contains a C++/WinRT winmd and dll, and a C#/WinRT projection assembly), the project runs fine. No code changes.

Originally I thought there was some complexity in my library, but the same thing happens with a very simple project with two WinRT classes with no actual functionality.

I tried in my complex application, which is a packaged full trust app and uses WinUI. Note, that WinUI itself doesn't cause issues in the .NET apps, so again, not sure where to look for the issue here.

To see if it was the app at fault, I created a blank C#/WinRT console app, with nothing more than "hello world" and the same issue happens.

Tried with .NET 7 and .NET 8. Currently using the .NET 8 SDK, but targeting .NET 7.
net7.0-windows10.0.22621.0
10.0.20348.0

I was tried rolling back to the .NET 7 SDK in case this was something in .NET 8's SDK, but I was unsuccessful doing that without seemingly having to repave all my dev tools. I wasn't keen on doing that.

[Psychlist1972]

Forgot to mention that I've used the latest C#/WinRT and latest C++/WinRT.

Here's the output pane last lines

'Microsoft.Midi.Settings.exe' (Win32): Loaded 'C:\Windows\System32\kernel.appcore.dll'. 
Exception thrown at 0x00007FFCC7D3536C in Microsoft.Midi.Settings.exe: Microsoft C++ exception: HRException at memory location 0x0000003C7917ED08.
Exception thrown at 0x00007FFCC7D3536C in Microsoft.Midi.Settings.exe: Microsoft C++ exception: [rethrow] at memory location 0x0000000000000000.
Exception thrown at 0x00007FFCC7D3536C in Microsoft.Midi.Settings.exe: Microsoft C++ exception: HRException at memory location 0x0000003C7917ED08.
Failed to create CoreCLR, HRESULT: 0x80070057The thread '.NET EventPipe' (0xa89c) has exited with code 2147516553 (0x80008089).
The thread '.NET Tiered Compilation Worker' (0xe1c0) has exited with code 2147516553 (0x80008089).
The thread 0x4e30 has exited with code 2147516553 (0x80008089).

[Psychlist1972]

I've figured it out. I had included the winmd file in the nuget package, but put it into the lib\net7.0... location instead of runtimes\win10-x64\native. Doing that caused the CLR Loading problem. Took a week to realize my mistake :P