Deleting my first comment. I offered support with DUCT and that offer still stands if you get in touch via the email on my main itch page, but I actually just realized the version you mentioned (1.10) is part of the Clark Edition. I highly recommend using the official tool. https://github.com/CG8516/ImgStreamCreator/releases
If you’re insistent on using DUCT, I’ve never tested it with CE but get in touch and we’ll get this working one way or another.