Links from category listing are dead

[scoody]

Hi,

On Joomla 1.7 and VM 2.0.0 (with sample datas)

I made a menu item  to show my category listing in my joomla template : It works, i see my 5 categories with their pictures

When i click on any category , it never displays the products under category, but always error 404 on all links

For product 1 the link is :  index.php/boutique-en-ligne/view/category/virtuemart_category_id/1

My tests :

- I disable SEO  : Same
- I see that there is no module position affected to component "VirtueMart Full Category List" : if i affect a position i have an error
- I tried to make a menu link directly  to one item and when i try to select it from droplist menu in admin mode i have the error :
Warning: Invalid argument supplied for foreach() in /www/libraries/joomla/html/html/select.php on line 536

- i used tools in VM to delete datas from database and put default parameters : Pb still the same ...

Thanks for your help