Krileon, to answer your question. When a member starts the registration process and they are asked to print the invoice the button covers the entire lower page. When they press the link it opens a window to print or close. When you select close it does nothing. The transaction is added to the basket but there is no communication back to the user. If they press it again it submits a second transaction into the basket.
Has anyone else had this problem ? I am on the current releases of Joomla, CB & CBSubs