[Plugin: Slideshow Gallery] Second image not showing anymore

All was working great last time, and out of nowhere I can’t see the second image of the slideshow anymore. I didn’t upgrade or touch anything since last time, so I have no idea how I have broken it.

Could you help?

http://irmageddon.com/

Thanks!
Nathalie

http://ww.wp.xz.cn/extend/plugins/slideshow-gallery/