debugging "The file browser is disabled for security reasons

Hi,

First, I know that questions about "The file browser is disabled for security reasons" have been asked many times. I've searched and read alot, and I think mine differ at least a little:

How can we debug the "The file browser is disabled for security reasons." error ?

I use a PHP integration, so my session is already started by the framework. Except if CKFinder load his configuration by AJAX, it should also have the session. On the top of the config.php file, I've placed:

if(!isset($_SESSION) || empty($_SESSION))
    session_start();

My authentication is stored in $_SESSION['user'], so in the CheckAuthentication() function, I've this:

function CheckAuthentication()
{
   return isset($_SESSION['user_idealit']);
}

... but I still have the error.
So I wanted to see what the function sees:

function CheckAuthentication()
{
   var_dump($_SESSION['user_idealit']);
   return isset($_SESSION['user_idealit']);
}

Boom, no more error message, and no debug.

I really have the feelling that the session is empty, or different between CKFinder and my webpage, but I can't find how to investigate this...


And BTW, who's calling the config.php file ?