Custom validation is not being called on production server but works on localhost

[eluser]vanquish[/eluser]
Hi Greg, it doesn't work whether I make the prefix caps or lowercase. It works fine locally on XAMPP but nothing on the live server.

Here is my code for the file my_form_validation.php

Code:

class my_form_validation extends CI_Form_validation {
    
    function my_form_validation()
    {
        echo 'called my_form_validation';    
        parent::CI_Form_validation();
    }
}