Export Product has encountered a problem.

Eclipse Galileo application using by me.
I am trying to learn Eclipse RCP and working on the few instances from a book. Freshly my Eclipse Galileo updated and few updated packages at home.
I have an issue that entirely avoids me from exploiting an Eclipse RCP invention through the wizard. Although exporting a product I receive an error message. I am not familiar how can I solve it,
I need help of someone?

