flypage.php не видит php-код в BMPE 1.0.15 - [VM1] Общие вопросы и ошибки

<a href="<? echo $continue_link; ?>">
  <IMG SRC="./images/M_cart/flypage_02.png" WIDTH=50 HEIGHT=50 ALT="Продолжить покупки">
</a>

$continue_link = '';
if( !empty( $category_id)) {
    $continue_link = $sess->url( $_SERVER['PHP_SELF'].'?page=shop.browse&category_id='.$category_id );
}
elseif( empty( $category_id) && !empty($product_id)) {
    $db->query( 'SELECT `category_id` FROM `#__{vm}_product_category_xref` WHERE `product_id`='.intval($product_id) );
    $db->next_record();
    $category_id = $db->f('category_id');
    $continue_link = $sess->url( $_SERVER['PHP_SELF'].'?page=shop.browse&category_id='.$category_id );
}
elseif( !empty( $manufacturer_id )) {
    $continue_link = $sess->url( $_SERVER['PHP_SELF'].'?page=shop.browse&manufacturer_id='.$manufacturer_id );
}

<a href="javascript:history.back()">