Cookies only setting in certain browsers

[eluser]KristenBlackburn[/eluser]
Ive tested my project on Maxthon, IE10, Chrome, Opera, and Firefox. Also installed cookie viewers for each browser, the only browsers which set cookies are chrome and firefox, the rest of the browsers fail to set cookies, leaving the session to return The action you have requested is not allowed.

define('CI_VERSION', '2.1.3');

$config['cookie_prefix'] = "";
$config['cookie_domain'] = ($_SERVER['SERVER_NAME'] == 'localhost' ? '' : preg_replace('/^www\./', '', $_SERVER['SERVER_NAME']));
$config['cookie_path'] = "/";
$config['cookie_secure'] = TRUE;


A little help on whats going wrong would be appreciated, thank you