Problems after update

After updating to the newest wordpress and plugin version, I have troubles with the images. If i click on the images, one part of it has this grey layers on it. It seems there are like a link pr something.

What can I do?

I have some screenshots:
http://www.eo-art.de/wp-content/uploads/2015/03/Screenshot-2015-03-09-20.12.14.png
http://www.eo-art.de/wp-content/uploads/2015/03/Screenshot-2015-03-09-20.12.17.png
And the site:
http://www.eo-art.de/portfolio/hunde/

Thank you!

https://ww.wp.xz.cn/plugins/lightbox-plus/