Compatibility issues with ONNX runtime that ships with the Kinect Azure Body Tracking SDK

[mbechard]

Hey,

My application uses the Kinect Azure Body Tracking SDK, which seems to ship with a custom ONNX runtime version (.dll says it's an 'Internal Build'). I need to update to a newer ONNX runtime version (1.18.1 currently, since I'm on CUDA 11). However when I do this then the Body Tracking fails to load, with the error:
But required APIs could not be found in this onnxruntime.dll! Wrong version of the onnxruntime.dll was loaded. Please place the onnxruntime.dll that shipped with the SDK

It was my understanding that I should be able to update my ONNX runtime version and older implementations should work with it. Is this not correct?
I tried doing the inverse as well, building a tool against the 1.18.1 headers and trying to use them with the ONNX runtime that ships with the Kinect SDK, but that fails as well with a similar error.