Known problems 

General: 

• Always use the version of the Table Library (table) , the Extension Library since 2007 (div2007) and the other required extensions as described in Shop System .
• Please look at the website Wiki for_tt_products .
• Get the latest supported version from Upgrade licences shop for_tt_products . Or have a look at the forum at mehrsprachiges Forum zur TYPO3 Benutzerregistrierung, Shop System
• .htaccess must be properly configured otherwise tt_products doesn't work as expected because the plugin can't find all necessary scripts with a poor configuration of .htaccess.
• Wrong parameters. GET/POST var 'tt_products[|]' is missing or no item with uid = x found on allowed pages (y,z) You should set the pid_list to inform the shop where to search for the products.
• Pay attention to all legal claims of all the countries where you ship the goods to!
• The plugin does not produce any output See the checklist above.