Virtuemart error when i try to Delete an item added to the Shopping Cart

[jeanfic]

Virtuemart version 2.0.20b, Joomla version 2.5.10!!

I got to shop, add an item to cart, change the qty... everything is normal!! But when i try to delete the item, the error appears: HTTP Error 404.19 - Not Found (The resource you are looking for has been removed, had its name changed, or is temporarily unavailable) - The screen is attached.

A interesting thing is that when i delete Products without "Custom Fields", i have no problems!!

Ty for any help!!

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