installed this comment script , but error comes up?

[hobo74]

I installed a php comment script on one of my sites but this error shows up on the page - Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/mediasno/public_html/44.php:13) in /home/mediasno/public_html/include/session.class.inc.php on line 69

what does that mean and how can I fix it...?

 

[Tia Wood]

It means there is some data sending after it is supposed to. If you PM me, I can take a look for you.