Hi, just installed QPBPP v1.32b on a fresh osCommerce Online Merchant v2.2 RC2a on a server with PHP 5.2.5 and MySQL 4.1.22. The admin section works great, except with adding a new product it shows error: Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /sites/XXXX/www/admin/categories.php on line 715 This error doesn't show up anymore after the product is added and you'll edit it. If you go now to the public catalog, every product listing will end up in error: 1052 - Column 'products_id' in where clause is ambiguous select p.products_id, p.products_quantity, p.products_weight, discount_categories_id from products p left join products_to_discount_categories using(products_id) where products_id in (28) [TEP STOP] If i click rightaway on the newest product then on the productpage all prices are 0, the discount shows correct. If i check it in the admin area, the prices are good in the QPBPP discount table. Is there coming a fix for this? PS: Just tested to use version 1.3.0 and 1.3.1, this versions doesn't have problems with showing a productlist in the public catalog. But still it still doesn't show prices.