installing LetoDMS in public_html blank page

[gnu_d]

Hi,
I'm trying to install LetoDMS in public_html, which is located in my /home/$USER folder.

This is part of the contents of the settings file:

PHP Code:

var $_rootDir = "/home/$USER/public_html/letoDMS-1.9";
var $_httpRoot = "/letoDMS-1.9/";
var $_contentDir = "/media/storage/multimedia/BOOKS/letodms/";
var $_ADOdbPath = "adodb/"; 


When I try to open the site, using this link:
http://localhost/~$USER/letoDMS-1.9/index.php
it only shows a blank page.

I enabled errors to be logged in php.ini, but I can't see any.

I got:

Apache 2.2.15-2
PHP 5.3.3-1
MySQL 5.1.47-1

Permissions:
All the files got as user nobody and group users, nobody is set as default user in httpd.conf.
The root folder, i.e letoDMS-1.9 got 777 flag.

P.S: replace $USER with a string, e.g: yourname.