CSS Not Laoding

[eluser]Richievc[/eluser]
Wiered Problem

Have two serves one is a Staging serving and the other is live when I move over the application over to the live sever the CSS Files do not load all tho the URL in the Soruce is corect, also check the follow: config file is correct, File are present URL is correct but styles will not load any thing I mightbe missing on why this is happening.

Code:

$this->template->add_css(base_url().'css/styles.css', 'link');

<link type="text/css" rel="stylesheet" href="http://www.mysite.com/css/styles.css" />

Works fine in staging server tho odd.