When assigning Product to Category I get error.

[NawtyAtNight]

Info:
Joomla 1.7
Virtuemart 2.0.0

ShopLab template from Linelab.org

When I assign a product to a category, and I go to the front end, i click and the category (see attachment 1) and I get an error message. (See attachment 2)

Now when I unpublished the products (see attachment 3) and I go to the front end I click on the category, it now works but its an empty page ( see attachment 4 ) 

If anyone can please help me out on this issue I would really appreciate it.



[attachment cleanup by admin]

[PRO]

http://forum.virtuemart.net/index.php?topic=95602.0