I have always used DVDfab to copy DVDs and now that I have upgraded to DVDfab9 it keeps telling me that I need double/dual layer DVDs to copy. Is there some setting that I can change to take care of this? I cannot afford to buy dual layer DVDs for what I am doing. I have always used regular blank DVDs. Why is this doing this? Please let me know if there is some setting that I can change to get his to start accepting regular blank DVDs. Thank you.