Header ("Location:".$something) - Error cannot modify header..

[Lylian]

Could anyone please help!. I have a form call RMA, but when the form is submitted, error came up, I tried everything i known, still couldn't fix it.
ERROR: Warning: Cannot modify header information - headers already sent by (output started at /home/myaccount/rma.php:2) in /home/myaccount/rma.php on line 14,

note: **line 14 was the line "header("Location:".$goto_rma_err1);"

my code:
<?php

$message = "Company: $Company\nName: $Name "; # and more..
$goto_rma_err1="http://www.mysite.com/something.php ";
if ($Company == "") #if blank
{
#start buffer
#ob_start(); tried this but no help!

header("Location:".$goto_rma_err1);

ob_end_flush(); tried but not help!

finish buffer

}
else
{# something going on here}

etc...

?>

PHP version is 4.42. I appreciate for your help or any suggestions! Thanks.

[NogDog]

Make sure there is nothing before the opening <?php including spaces, tabs, or newlines (and of course HTML text).

[Lylian]

Thank you so much. My opening <?PHP was on line 2. I deleted the blank line #1 Now it works. Took me 3 days but couldn't figure it out. Thanks again