Virtuemart links /administrator/administrator/

After running the install, when I try to click on the buttons in the components/virtuemart I get a strange url that seems that /administrator/administrator/ insted of only one /administrator/. For example the link has one /administrator/administrator/ too many. Looks like a bug or something. Can anyone help?

Kind regards,
Winston

Please follow the instructions in the last step of this article http://www.gavick.com/supportdesk/index ... rt-package