The subject line says it all. Once I remove the question mark from the file name, Topaz Photo AI opens the images just fine. Drag-and-drop or trying to open via the file menu does not matter. File format does not matter.
I can confirm this. M1 Mac mini Ventura 13.3.
This was/is the case with other photographic software I have used, but not sure if it’s still the case. I can certainly open the file with On1 PR 2023 and DxO PR2.
I’m not going to argue with you. As Don mentioned…the product Topaz and graphic files in general are multi-platform and should not contain those characters. If you were sending your files to an agency that was paying YOU, and they were using Windoz, and refused your file naming structure, you’d change your mind quickly.