I’ve been using CabWriter on the Mac for the last few years, and there’s definitely a couple of issues related to multiple open windows, but I’ve primarily only seen it in terms of trying to create a new project. It doesn’t create a new project for CabWriter if there’s another CabWriter model open. I’m curious what you mean about jumping around to different windows; I don’t recall seeing anything like that. I’m wondering if you’re running into the other issue we’ve seen with the Mac which is when you update Sketchup to a newer version, it can leave files behind which cause problems. Are you having any issue with the story stick or setting parameters?