Hi,
I really no idea what is going on in your website. Once the product is removed, things get messed up.
Stylizing "VM Shopping Cart" is an extra thing that comes with our PureMart.
You can disable that though.
For this purpose, remove this folder:
kreativtextil.hostingsiteforfree.com/templates/business12/html/mod_virtuemart_cart/
So you would start using the Ordinary Virtuemart Shopping cart module. See if everything goes back to normal with original Virtuemart shopping cart module.
Further more, you can use the VM Dropdown cart that LineLab has released, which is basically similar to our DropDown shopping cart, and it is a freeware shopping cart module. To download, click here:
goo.gl/HD3DT
Regards.