cannot send session cookie - headers already sent
I got these messages :
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Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\xampp\htdocs\bcef\files\mailstuff\email2.php:1) in C:\xampp\htdocs\bcef\files\mailstuff\email2.php on line 4
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\xampp\htdocs\bcef\files\mailstuff\email2.php:1) in C:\xampp\htdocs\bcef\files\mailstuff\email2.php on line 4
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after setting up an email form as instructed and testing it in a browser. The message means nothing to me, and neither does the explanation in the PHP manual. There is nothing about this in any of the documentation for the product. The last version never came up with any error messages, so I am totally at a loss.
Can anyone help?