try changing the following lines:
<?php require_once('/WA_Globals/WA_Globals.php'); ?>
<?php require_once('/Connections/localhost.php'); ?>
<?php
//WA eCart Include
require_once('/WA_eCart/WA_Store_Cart_PHP.php');
?>
to:
<?php require_once('WA_Globals/WA_Globals.php'); ?>
<?php require_once('Connections/localhost.php'); ?>
<?php
//WA eCart Include
require_once('WA_eCart/WA_Store_Cart_PHP.php');
?>