When I tried WB10 it didn't paint the frames in my paint program (PSP7). It's been awhile but I don't recall there being a page for doing those??? Anyhow, I was told they were removed with WB8? Then there is the issue of up grading to Win10, gosh, just not happening.
If you look at my pics Greg, you'll see that you can skin UIS2 frames in SKS 10, Photoshop Pro uses UIS2 frames, as you can see in the screenshot. However, I don't use PSP7, I'm up to PSP 18, so I can't vouche for that part, although, I'd think that no matter what you use for your images, once it's save as a .png, then imported to SKS, I'd think it'd work just fine, but I could be wrong.
I'm not a great fan of Win 10 either, but, I use it for skinning purposes, I want to try to include all OSs, for not everyone uses just Win 7. I do appreciate your time and effort that you put into a WB, and you've been surpassing yourself in style, so hang in there, ratings doesn't make the skin, its the skinner, and I found out, that you can't please everyone, heaven knows I tried, I'd get frustrated at times, but Dave Bax, Tom (LightStar), and Jim, always keep me in check, and bring me back to reality, it's great to be a part of this skinning community, I've made incredible friends here, wouldn't trade it for nothing.