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Can you help me?
I have not configured correctly config.php in the root folder after installation because it gives me this error:

Fatal error: Class 'BB' non trovato in /
web/htdocs/www.matteocarucci.it/home/forum/includes/vb5/template.php on line 129

so I configured the config.php where I went wrong?

// ****** Base URLs ******
// The following settings all deal with the url of your forum.
// If set incorrectly your site/software will not function correctly.
// These urls should NOT include a trailing slash
// This is the url and web path of your root vBulletin directory
$config['baseurl'] = 'http://www.matteocarucci.it/forum';

// This will only be used if you wish to require https logins
// You will not need to change this setting most of the time.
$config['baseurl_login'] = $config['baseurl'];
// If you do wish to use https for login, uncomment this line
// Then fill in your https url.
//$config['baseurl_login'] = 'https://www.matteocarucci.it/forum';

// ****** System Paths ******
// This setting allows you to change the name of the admin folder
$config['admincpdir'] = 'admincp';
// ****** Cookie Settings ******
// These are cookie related settings.
// This Setting allows you to change the cookie prefix
$config['cookie_prefix'] = 'bb';

// ****** Special Settings ******
// These settings are only used in some circumstances
// Please do not edit if you are not sure what they do.
// You can ignore this setting for right now.
$config['cookie_enabled'] = true;
$config['report_all_php_errors'] = false;
$config['no_template_notices'] = true;
// This setting enables debug mode, it should NEVER be used on a live site
$config['debug'] = false;
// Assumes default location of core.
// These are the system paths and folders for your vBulletin files
// This setting is for where your vbulletin core folder is
$config['core_path'] = realpath(dirname(__FILE__)) . 'forum/core';
// This is the url and web based path to your core directory
$config['baseurl_core'] = $config['baseurl'] . 'forum/core';