NextGEN Gallery Slideshow: I can’t see it

This is the blog https://badd.com.ar/. A post in particular https://badd.com.ar/2009/04/24/ir-abajo/.

I can’t see the slideshow or any error.
It doesn’t work in posts or a widget sidebar.

I cam see an error in this file https://badd.com.ar/wp-content/plugins/nextgen-gallery/xml/imagerotator.php?gid=1.

I read a lots forum posts but nobody have the same problem.

Anybody have any idea? Thanks a lot.