Slideshow shortcode not working

normal [nggallery] is working and “View as Slideshow” is working, but when i try to use the [slideshow] shortcode, i get nothing??? i have tried deactivating all plugins – still nothing. Is it a conflict with my theme? any help on where to look would be appreciated.
thanks

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