the index page is missing the GetContent() function call:
<?php
$ycCart->GetContent();
?>
on the index page, change:
<?php
//WA eCart Include
require_once("WA_eCart/ycCart_PHP.php");
?>
to:
<?php
//WA eCart Include
require_once("WA_eCart/ycCart_PHP.php");
?>
<?php
$ycCart->GetContent();
?>