Scusami ho dato per scontate troppe cose... ecco di seguito il file di configurazione del plugin:

?php


/** This file is part of KCFinder project
*
* @desc Base configuration file
* @package KCFinder
* @version 2.51
* @author Pavel Tzonkov <pavelc@users.sourceforge.net>
* @copyright 2010, 2011 KCFinder Project
* @license http://www.opensource.org/licenses/gpl-2.0.php GPLv2
* @license http://www.opensource.org/licenses/lgpl-2.1.php LGPLv2
* @link http://kcfinder.sunhater.com
*/


// IMPORTANT!!! Do not remove uncommented settings in this file even if
// you are using session configuration.
// See http://kcfinder.sunhater.com/install for setting descriptions


$_CONFIG = array(


'disabled' => true,
'denyZipDownload' => false,
'denyUpdateCheck' => false,
'denyExtensionRename' => false,


'theme' => "oxygen",


'uploadURL' => "http://www.miosito.it/resource/upload",
'uploadDir' => '/var/www/vhosts/miosito.it/httpdocs/resource/upload',


'dirPerms' => 0755,
'filePerms' => 0644,


'access' => array(


'files' => array(
'upload' => true,
'delete' => true,
'copy' => true,
'move' => true,
'rename' => true
),


'dirs' => array(
'create' => true,
'delete' => true,
'rename' => true
)
),


'deniedExts' => "exe com msi bat php phps phtml php3 php4 cgi pl",


'types' => array(


// CKEditor & FCKEditor types
'files' => "",
'flash' => "swf",
'images' => "*img",


// TinyMCE types
'file' => "",
'media' => "swf flv avi mpg mpeg qt mov wmv asf rm",
'image' => "*img",
),


'filenameChangeChars' => array(/*
' ' => "_",
':' => "."
*/),


'dirnameChangeChars' => array(/*
' ' => "_",
':' => "."
*/),


'mime_magic' => "",


'maxImageWidth' => 0,
'maxImageHeight' => 0,


'thumbWidth' => 120,
'thumbHeight' => 120,


'thumbsDir' => "thumbs",


'jpegQuality' => 100,


'cookieDomain' => "",
'cookiePath' => "",
'cookiePrefix' => 'KCFINDER_',


// THE FOLLOWING SETTINGS CANNOT BE OVERRIDED WITH SESSION CONFIGURATION
'_check4htaccess' => true,
//'_tinyMCEPath' => "/tiny_mce",


'_sessionVar' => &$_SESSION['KCFINDER'],
'_sessionLifetime' => 30,
'_sessionDir' => "",


'_sessionDomain' => "www.miosito.it",
'_sessionPath' => "/",

);


?>

quando attivo la sessione ecco i parametri che passo:

$_SESSION['KCFINDER'] = array();
$_SESSION['KCFINDER']['disabled'] = false;
$_SESSION['KCFINDER']['uploadURL'] = $result->uploadURL;//'http://www.miosito.it/resource/upload';
$_SESSION['KCFINDER']['uploadDir'] = $result->uploadDir;//'/var/www/vhosts/miosito.it/httpdocs/resource/upload';


Cosa dovrei postare ancora ?
sicuramente i dati di phpinfo() ma quali in particolare ?