Denise,
I created the papers that you're having problems with. I just grabbed a copy of the zip file from the Elements section and unzipped it. The resulting .JPG files opened fine for me, but I'm probably not the best person to test it.
It could be that your computer had an error when you unzipped the files. In that case, try unzipping it again and see if you still have problems.
If that doesn't help, please PM me with your email address and I would be happy to email you the original .JPG files.
Sorry you're having problems with the files!!