Right. Whatever you've done to hack that file up, you've deleted things that must not be deleted entirely.
Here's the original line:
Code:
$display_products_price = TEXT_PRICE . ' ' . $products_price . str_repeat('<br clear="all" />', substr(PRODUCT_ALL_LIST_PRICE, 3, 1)) . (zen_get_show_product_switch($products_all->fields['products_id'], 'ALWAYS_FREE_SHIPPING_IMAGE_SWITCH') ? (zen_get_product_is_always_free_shipping($products_all->fields['products_id']) ? TEXT_PRODUCT_FREE_SHIPPING_ICON . '<br />' : '') : '');
If you're going to remove things, take care not to break the code in the process. If you don't want the <br> tag, then at least leave an empty string, instead of completely deleting it and breaking the PHP code.