Brief
We have modified the 'product_print.php' file for release 3.4.7.
Description.
In some cases the Product's Print page was opening with DB Error.
Solution.
We would recommend to download an updated version of the file from here:
http://www.viart.com/downloads/product_print-3.4.7.zip
Further, extract the above mentioned file into the root folder of your shop replacing an existing one. Don't forget to make a backup copy of the current file in case something goes wrong.