basepath is so that it can not see all of a sudden

I think you're mixing up some things.

The line

PHP Code:

<Php if (defined ( 'BASEPATH')!) Exit ( 'No direct script access allowed')?; 


Should be:

PHP Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 


The !-mark means "not". If you omit that, or if you put it in the wrong place, your website will throw the "No direct script access allowed" in all cases, because the BASEPATH constant has been defined.