Authorize.net - checkout_failure
I'm having trouble with finalizing a cart that I've duplicated on numerous sites it the past with little trouble. I was using eCart v5.03, but just updated to v5.06 and am still getting the same errors on checkout click on the confirm.php page.
Warning: Cannot modify header information - headers already sent by (output started at /home/public_html/confirm.php:18) in /home/public_html/confirm.php on line 391
The code from the confirm.php page
The site works great in TEST MODE with Authorize.net. This error only comes when it is in LIVE MODE.
I can confirm that the following is correct (As I have triple checked them already)
$AuthNet_required[$nextIndex] = "x_login";
$AuthNet_required[$nextIndex] = "x_tran_key";
$AuthNet_required[$nextIndex] = "x_test_request";
$AuthNet_required[$nextIndex] = "FALSE";
Thanks in advance for your assistance.