Codeigniter calendar language problem

[eluser]lucas123[/eluser]
I'm trying to get the calendar in CodeIgniter to print month names in Polish.

In config.php I have this line:

Code:

$config ['language'] = 'polish';

In autoload.php I have this line:

Code:

$autoload ['language'] = array ('calendar');

In my controller:

Code:

$this->lang->load('calendar', 'polish');

So here I am trying to print the date:

Code:

echo mdate('%F');

The result is: August

Month names are printed in English, which is wrong, I want it in Polish. I have calendar_lang.php in Polish.

Any advice on how I solve this?
Please help...