I found in Windows 11 that I had to give the Aiarty Image Matting.exe file advanced permissions before it could access the image models. Before I did that, it would fail to load the image model. Once I did that, it works fine and did a great masking job on the test picture that I used. It was a difficult mask job, too, because the image is overexposed making the mask run into the subject in other masking software I tried.