Virtuemart cart problem

I tried but nothing happened. Any more suggestion?

I think I found somethig. Maybe the template is wrong. If I go in to the joomla global config and switch off the "search friendly domains" the problem is solved. But I still have the other problem. I can't delete an item from the cart
or change the quantity.

Do you have in your menus item to link to shop chart page?
(It's menu type virtuemart, parameter page = shop.cart )