Help with clonedvd2

Ive burnt about 10 dvd with no prob. I went to burn another one and i made it all the way to the final burn screen and my go button isnt highlighted. Can someone please help me? I have clonedvd2 2.0.9.4 and anydvd 4.0.4.1

You have to give more detail then that. start by telling us, how did you start and what you did along the way up until the button is greyout