Library playing me up!

[eluser]Adam Griffiths[/eluser]
Hey!

I am writing an authentication library, firstly, here is my constructor.

Code:

function Auth($config)
    {
        $CI =& get_instance();
        $CI->load->library('session');
    }

I get this error, whenever I use $CI->function->parameter('value'); from any other function in the auth class.

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: CI

Filename: libraries/Auth.php

Line Number: 53


A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: libraries/Auth.php

Line Number: 53

Line 53 is...

Code:

$CI->load->library('session');

I am running PHP 5.2.5 The user guide only says that PHP 4 has problems returning the codeigniter instance from a constructor...I have also tried using __construct as my constructor name but it has the same end result.

All comments welcome.

Thanks