I had to copy and paste the
jquery.prettyPhoto.js file from this site. Download whatever version you want (I downloaded the development version) and just copy that file along with
prettyPhoto.css and all the images located in
/images/prettyPhoto/ into your directory and remember to call
You will also need to change the image paths in
prettyPhoto.css to where ever you put the image files from
After I did that, the plugin worked for me.