Wellllll... I wish I could tell you I figured out the mystery of why some people could open the jpg paper files & some couldn't. But I can't. And I'm now bald because of it! *lol*
My main problem was I couldn't even recreate the issue so I didn't know if it was in the download or the files themselves or what. I finally thought to try to download the papers on my old laptop. Success... or failure... whichever way you look at it. I had no problems downloading the files, but nothing on that computer would open the jpgs. Nothing. They were all "unsupported". I have no clue why. I wish I did. I sent myself some of the papers from the new kit I'm working on and I could open them just fine. I've never had this happen with my papers before. I don't know what I did to those papers. :-/
Now I'm worried I'm going to do it again, since I don't know what I did in the 1st place. *lol*
I tried dropping the papers into a new document and resaving them. For some reason it worked... at least on my old laptop. *lol* So for anyone having problems with the original paper files, here is the new and hopefully improved version. Let me know if these work for you.
Sorry for the trouble. :-/