LisaB:

All formatting does to a CD is create a label for the disc.  I use Roxio
(which is also a Sonic product), and it will assign a label if
the disc needs it.  Does this product feature the drag and drop method of
copying?

I have no idea how your files became corrupt.  I do tend to believe that
there is something about the hardware in your computer that is faulty.
Copying files from one place to another should not corrupt both places.
If I were you I would first open the images that you wish to copy to the CD
in my photo editor.  I would save the images to a different directory with a
different name.
Then, once the new directory is populated, I would copy the images in the
new directory to the CD.
Jim