Confirm page stops loading before end

I'm trying to finish up a shopping site. Everything goes smoothly until the comfirm.php page.

It looks like it's all there (all the way through displaying the shipping address info), but the "modify information" and "submit order" buttons don't display. When viewing the source code (in the browser) the page stops loading in the table class "eC_ButtonWrapper" after showing just the first two lines: name="x_fp_sequence" and name="x_fp_timestamp" (which is were the Authorize.net login and transaction code is located).

This code looks exactly like that in another website using Authorize.net, so I assume that the error really is occurring somewhere else, where should I look?

add the following code to your confirm page to enable error reporting:

<?php

error_reporting(E_ALL);

ini_set('display_errors','on');

?>

it sounds like a php error is occuring on the confirm page.

Based on previous problems I now put the error thing at the beginning of all my php documents. It is at the start of this confirm.php page, but no error messages appear.
This is why I thought the problem is somewhere else...

please send a link.