Gallery Theme: slide show doesn't slide

Love this theme, and would like to use it... Just one problem, I can't seem to get the slide show to slide. I have sucsesfully uploaded and cropped three images, and the home page only shows the most recent image. There are no arrows, nor transition/image rotation at all.

Reading through other posts, I have checked that the slide show is set to "yes" and that there are no static pages specified under settings/reading. I also see nothing in the server logs that looks to be related. There is only one active plugin (WPMU DEV Update Notifications).

I've set up a test site for playing with this theme (as I need to be familiar with it before including it in a proposal to a new client). Have a look, you'll see what I mean.

Any help would be apreciated.

edit: I also tried changing the permalink settings (just in case).