jquery error

I am looking voor a lightbox plugin.
I found your plugin.

The plugin don’t work. It has an error. This is the rror from my google chrome console.

Uncaught TypeError: undefined is not a function wp-lightbox-2.min.js?ver=1.3.4.1:1
a.fn.lightbox wp-lightbox-2.min.js?ver=1.3.4.1:1
(anonymous function) wp-lightbox-2.min.js?ver=1.3.4.1:1
j jquery.min.js:2
k.fireWith jquery.min.js:2
n.extend.ready jquery.min.js:2
K jquery.min.js:2

I am using wp 3.9 And a own development theme.

http://wordpress.org/plugins/wp-lightbox-2/

https://wordpress.org/plugins/wp-lightbox-2/