Bukkit

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?
It supose that after uploading the webui you can install it. But instead of that, I got a white screen of death.

What version of the product are you using?
Statistics Portal 1.3.4

Do you have an error log of what happened? (Portal: check cache/error.txt)
No error log

Please provide any additional information below. (Plugin/Portal Version, Server Version, PHP Version. MySQL Version)
Plugin is installed correctly. The problem is the webui. I got a blank screen when I go to myd0main.com/install.php.
Since it doesn't say anything, I include this code in the install.php to get any clue of what is happening:
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);

But even with that code, white screen of death is still there. Cache, include and config folders has 777 permissions. I make a phpversion.php and it says that my server has PHP Version 5.4.39-0+deb7u2, GD Version 2.0.36.

In the same server, I have installed the webui of ban management. It use PHP as well, so, is not a server thing.

What's going on here?. D: