Brief
We have updated the logic of some scripts to provide more security.
 
Solution
Download the updated version of the files or reinstall ViArt Shop with fresh archive:
http://www.viart.com/downloads/block_user_profile-4.zip
http://www.viart.com/downloads/block_basket-4.zip
http://www.viart.com/downloads/block_checkout_login-4.zip
http://www.viart.com/downloads/block_articles_breadcrumb-4.zip
http://www.viart.com/downloads/block_ads_breadcrumb-4.zip
http://www.viart.com/downloads/shipping_calculator-4.zip
http://www.viart.com/downloads/block_user_profile-4.html.zip
 
Further, extract the 'block' files into the 'blocks' folder and 'shipping_calculator.php' into the root of your shop replacing existing files. Please do not forget to make a backup copy of the current files in case something goes wrong.

Hello
 
 
Thanks, this is extremely important.

Don't put block_user_profile.html into the /blocks folder. It should go into /templates/<yourtemplatename>/ (replace existing one)
 
-Christoph