ERROR 2: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /var/www/afstamning.dk/public_html/PhpGedView/index.php:16)

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /var/www/afstamning.dk/public_html/PhpGedView/index.php:16) in /var/www/afstamning.dk/public_html/PhpGedView/includes/session.php on line 535

ERROR 2: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /var/www/afstamning.dk/public_html/PhpGedView/index.php:16)
0 Error occurred on in function session_start
1 called from line 535 of file session.php in function require_once
2 called from line 69 of file config.php in function require
3 called from line 49 of file index.php

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /var/www/afstamning.dk/public_html/PhpGedView/index.php:16) in /var/www/afstamning.dk/public_html/PhpGedView/includes/session.php on line 535