Description
Mobile version is not optimized for new one page checkout process, there is an error:
Block doesn't exist:cc_start_year
 
Solution
http://www.viart.com/downloads/mobile-4.2.css.zip
http://www.viart.com/downloads/block_order_info-4.2.mobile.html.zip
 
Download the files above and extract 'mobile.css' in /styles folder and 'block_order_info.html' in /templates/mobile folder.
 
Please remember these files should be present in mobile version of the site. So if your mobile version is located in sub-directory of the main domain called "mobile" then files should go in folders:
 
/mobile/templates/mobile
/mobile/styles/