Ajax with CSRF causing a Double Post to controller

Personally I have disabled regeneration of the CSRF so it will be the same. So that I don't need to get a new one back from the Codeigniter. As the user stays on the same page doing multiple AJAX.

PHP Code:

$config['csrf_regenerate'] = FALSE; 


But this ain't the cause of your problem. Have you tried a different version of your Javascript library? If you are using one.