Model Access

I suggest that you open ./system/core/Codeigniter.php and see how things are loaded.

I have auto-loaded it correctly, there is no issue with auto-loading.

/*
| -------------------------------------------------------------------
|  Auto-load Models
| -------------------------------------------------------------------
| Prototype:
|
| $autoload['model'] = array('first_model', 'second_model');
|
| You can also supply an alternative model name to be assigned
| in the controller:
|
| $autoload['model'] = array('first_model' => 'first');
*/
$autoload['model'] = array('Helper_model'=>'lib','login_model'=>'login');