Description
When multiplying an order coupon using 'Multiply' option, it automatically adds 0 in the order restrictions values.
 
Solution
Download the updated version of the file:
http://www.viart.com/downloads/admin_coupon_multiply-4.0.7.zip
 
Further, extract the 'admin_coupon_multiply.php' into 'admin' folder of your shop replacing an existing file. Please do not forget to make a backup copy of the current file in case something goes wrong.