A few days ago, I moved this site off of my old hosting (finally) and inadvertently broke a few pages. Upon investigating, I realized that WordPress was hopelessly out of date and the theme was old and crusty as I haven't checked if there was an upgrade for that either. Now that I'm over on my new server, I have a script that keeps WordPress up to date (and secure), but I had to work out which plugins were breaking stuff.
I've decided to try out Crowd Favorite's Carrington theme, which I may tweak in the upcoming weeks, but for now, it works fine for my needs. Everything should work now.
I'll be pushing out an update for phpFlickr in the next day or two to support the new API methods.