JSON problem

Hello!

I just created a "Generator" (http://editor.datatables.net/generator/) download package.
Then I changed the mySQL database info in /php/lib/config.php, created the DB and uploaded all to my website.

Sadly all I get is a: <<DataTables warning (table id='name_of_my_table'); DataTables warning: JSON data from server could not be parsed. This is caused by JSON formatting error>>

What is wrong? What can I change or modify??

If you need the URL, is: http://www.diego-garcia-calleja.webege.com/languages/prueba/palabras.html

Thanks for your help! :D