Only thumbnails gallery not working

Hi there!

I updated my theme and changed to a child theme and now finally my image galleries are working, except this one. The thumbnails. It does show the thumbnails but when you click on it, it shows a blank page and nothing works anymore. The little cross to exit the slideshow doesn’t respond either.

Hopefully someone can help me out.

Here is a link to a page I made with the thumbnail gallery, showing it doesn’t work!

I have a Twenty Eleven theme, just updated, and I use a child theme. I haven’t disabled all of the plugins yet because it’s a blog and sunday night is not the best night to mess with the blog! And because everything works except one, I hoped I wouldn’t have to try that!

http://ww.wp.xz.cn/plugins/jetpack/