We have made a fix of the 'admin_export.php' file after release 3.2 has been issued.
 
Description.
There was notices about undefined constants when making an export of products.
 
Solution.
Please download an updated version of the file from here:
http://www.viart.com/downloads/admin_export-3.2.zip
Then extract the 'admin_export.php' file into the 'admin' 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.