Hi jlehrer, thank you that did get the captions beneath my thumbnails, however another problem I've discovered (this problem existed before adding your solution) is that any thumbnail with a caption or description won't appear in the lightbox. I am trying to use either the Simple Lightbox or the Lightbox Gallery plugin, but the problem is the same for both. Any thumbnail with a caption will not display in the lightbox. Any ideas on why this might be happening.
If you go to another test page I did on my own site, http://www.theresasheridan.com/blog/gallery-test, this is not the case and thumbnails with captions show up in the lightbox, using just the Simple Lightbox plugin. I cannot figure out why it works on one site and not on the other. Obviously there is some setting interfering, but I can't figure out which one. I have tried deactivating other plugins to see if they were getting in the way, but that has not helped either.
Any suggestions would be appreciated. Thank you!