No products Display in order confirmation e-mail Prestashop.

Sometimes when you upgrade Prestashop at that time your order confirmation e-mail not display products informations.

For this:

Check that you have the files order_conf_product_list.txt and order_conf_product_list.tpl in the directory mails/your_language/


Otherwise, copy from the en-folder. While you're at it, check the folder for the files order_conf_cart_rules too