Index: branches/version-2_12-dev/data/class/pages/products/LC_Page_Products_List.php
===================================================================
--- branches/version-2_12-dev/data/class/pages/products/LC_Page_Products_List.php	(revision 22796)
+++ branches/version-2_12-dev/data/class/pages/products/LC_Page_Products_List.php	(revision 22862)
@@ -403,5 +403,6 @@
                 $arrProducts[$key]['quantity']          = $arrForm['quantity'];
                 $arrProducts[$key]['arrErr']            = $arrErr;
-                $js_fnOnLoad .= "fnSetClassCategories(document.product_form{$arrProducts[$key]['product_id']}, '{$arrForm['classcategory_id2']}');";
+                $classcategory_id2 = SC_Utils_Ex::jsonEncode($arrForm['classcategory_id2']);
+                $js_fnOnLoad .= "fnSetClassCategories(document.product_form{$arrProducts[$key]['product_id']}, {$classcategory_id2});";
             }
         }