It's acting strangely for me, as well. All the rest of the themes tested fine. I was using IE when it was not working. I tried to test it in Firefox, but for whatever reason, it would not allow me to switch themes away from the typical Seascape I usually use...even when I changed my default to Corona. Weirdness.
I'm off on a plane to FL in a few hours, so I'll flag this one for Smulkin's attention. Thanks for letting us know!