Brief
We have updated all includes and some of the admin scripts.
Description
There is incorrect encoding of some symbols in va_mail() function which causes SMTP server to reject ViArt code and emails to not be sent.
Solution
Download the updated version of the files from this archive:
http://www.viart.com/downloads/includes-4.zip
Further, extract the files from 'includes' folder in this patch into 'includes' folder of your shop via FTP in BINARY mode and files from 'admin' folder in your 'admin' folder accordingly replacing existing files. Please do not forget to make a backup copy of the current files in case something goes wrong.