I have had no problems using clone dvd ....except when I attempt to burn to a dvd-r dl. I get the dreaded " source data to large " message. I have tried this on both pcs that I have and get the same result. Both have liteon burners one a 20 speed and one a 16 speed. And both have the latest firm ware installed on them. Now I can burn the image to my hard drive and use Nero to burn it to a dual layer. But that kind of defeats the purpose of clone dvd......And yes, tried it on verbatum disc too........Any suggestions.......?