English / French page product not found

Hi,

I'm trying to install French language on my coming opencart ecommerce. All work great (frontend and backend) except, when i try to view product in french... i'm getting a product not found page ?! Here an exemple :

http://paraw3b.com/~parts2go/index.php? ... duct_id=58
http://paraw3b.com/~parts2go/index.php? ... urer_id=11
(Stay in the same page but switch from FR to EN.. you will view my problem)

If i look in my database and in the admin area.. i can see both english and french information ?

Somone have solution or hint ?