slightly custom tpl_header was working .. now not

I had customized the tpl_header in my theme folder to include at the top once the view logged in the links for a reminder service and a wishlist .. however I set the cart down to maint. after just returning it back online the links don't show when the user is logged in.. though i have re-up'd the tpl file again making certian the links are in there and yet they still don't show..

here is the section where i added the links

<!--bof-navigation display-->
<div id="navMainWrapper">
<div id="navMain">
    <ul class="back">
    <li><?php echo '<a href="' . HTTP_SERVER . DIR_WS_CATALOG . '">'; ?>  <?php echo HEADER_TITLE_CATALOG; ?></a></li>
<?php if ($_SESSION['customer_id']) { ?>
    <li><a href="<?php echo zen_href_link(FILENAME_LOGOFF, '', 'SSL'); ?>"><?php echo HEADER_TITLE_LOGOFF; ?></a></li>
    <li><a href="<?php echo zen_href_link(FILENAME_ACCOUNT, '', 'SSL'); ?>"><?php echo HEADER_TITLE_MY_ACCOUNT; ?></a></li>
<?php
      } else {
        if (STORE_STATUS == '0') {
?>
    <li><a href="<?php echo zen_href_link(FILENAME_LOGIN, '', 'SSL'); ?>"><?php echo HEADER_TITLE_LOGIN; ?></a></li>
<?php } } ?>

<?php if ($_SESSION['cart']->count_contents() != 0) { ?>
    <li><a href="<?php echo zen_href_link(FILENAME_SHOPPING_CART, '', 'NONSSL'); ?>"><?php echo HEADER_TITLE_CART_CONTENTS; ?></a></li>
    <li><a href="<?php echo zen_href_link(FILENAME_CHECKOUT_SHIPPING, '', 'SSL'); ?>"><?php echo HEADER_TITLE_CHECKOUT; ?></a></li>
    <li><a href="<?php echo zen_href_link(FILENAME_ACCOUNT_DATES, '', 'SSL'); ?>">Birthday Reminder</a></li>
    <li><a href="http://www.thebirthdaygiftstore.com/index.php?main_page=un_wishlist">Wishlist</a></li>
<?php }?>
</ul>

like i said they worked perfectly before and now they don't .. only thing that changed while it was down in maint mode was I moved it from a shared IP to a dedicated server that i believe is running php 5 could that be causing the problem?

Thank you for any assistance,
Noneya

the site to view it is https://www.thebirthdaygiftstore.com

watch your eyes it's VERY bright