Brief
We have fixed a problem in advanced search script.
Description
The advanced search by product feature (specifications) is failing.
Solution
Download the updated version of the file:
http://www.viart.com/downloads/filter_functions-4.zip
Further, extract the 'filter_functions.php' into 'includes' folder of your shop via FTP in BINARY mode replacing existing file. Please do not forget to make a backup copy of the current file in case something goes wrong.
