[Plugin: Portfolio Slideshow] Loading animation doesn´t show up

Hi, I´m using the great portfolio slideshow plugin on my website. But since I changed to the newest version of the plugin the loading gif doesn´t show up anymore. It´s this website here: http://www.ackermann-raff.de/w/

Has somebody an idea what´s the problem here?

Hannes

…I´m running the newest version of WP. And just a few other plugins.

http://wordpress.org/extend/plugins/portfolio-slideshow/