Title...

Did you get any errors during the install?
Have you checked your CHmods?

Hello.

Your server probably refuses to use relative paths, so that php's require_once instructions can't find the files specified.

You can act the following way:

add the following string in inc/design.inc.php and admin/index.php

ini_set("include_path", "path_to_script");

you should replace "path_to_script" with the absolute path to your script's folder.

Regards
ArturA

Sorry Arthur but nothing happen if is possible that you can help me more, the script is in http://www.social.tareaescolar.com/