Latest security patch is causin gthis problem:


Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/mogultra/public_html/artscrafts/includes/classes/shopping_cart.php:3573) in /home/mogultra/public_html/artscrafts/includes/functions/sessions.php on line 100

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/mogultra/public_html/artscrafts/includes/classes/shopping_cart.php:3573) in /home/mogultra/public_html/artscrafts/includes/functions/sessions.php on line 100

Warning: Cannot modify header information - headers already sent by (output started at /home/mogultra/public_html/artscrafts/includes/classes/shopping_cart.php:3573) in /home/mogultra/public_html/artscrafts/includes/init_includes/init_templates.php on line 78

When I undid it, still the above message remained when website was downloaded. I wonder what can i do?