Using model - issue while using methods

[eluser]Spir[/eluser]
Hi I have a weird issue.
I load a model then I use some methods from that model but it says the model is null...

I tought it's because of the name of my model but after checking the reserved names it's look ok.

Here is my code within a model that works fine :

Code:

$this->load->model('log');
$this->log->add($some_vars);

I have put some debug within the constructor. it's executed fine.

Example :

Code:

class Log extends Model {

    function Log(){
        parent::Model();
        
        echo 'hello yourself';
    }

does print. But when I want to use my methods it crash :

Undefined property: My_other_model::$log</p>
Call to a member function add() on a non-object