Checkout Error - functions_general.php

I get this error when trying to check out:

Warning: Cannot modify header information - headers already sent by (output started at /nfs/c03/h02/mnt/52396/domains/store.islandcargosystems.com/html/includes/languages/english/modules/shipping/flat.php:53) in /nfs/c03/h02/mnt/52396/domains/store.islandcargosystems.com/html/includes/functions/functions_general.php on line 44I

My site is: http://store.islandcargosystems.com

I edited the flat rate shipping module to read different, maybe thats the cause?

This is what I changed the php file to be:

define('MODULE_SHIPPING_FLAT_TEXT_TITLE', 'Cargo shipping to The Bahamas');

define('MODULE_SHIPPING_FLAT_TEXT_DESCRIPTION', '');

define('MODULE_SHIPPING_FLAT_TEXT_WAY', 'We will review your order and determine the best shipping rate');

I don't want to include the shipping charge at the time of chechout, because we are the shippers and want to call back the clients with shipping rates. We only ship to the Bahamas. Any help would be greatly appreciated.

THANKS

Figured this out reading other posts.

It was xtra spacing in 2 different files:

1. checkout_shipping.php
2. flat.php

Next time I will read previous posts first 8-)