I made a couple copies of some Dual Layer movies using the latest CloneDVD (22.214.171.124) software, thus I changed the format from DVD-5 to DVD-DL. The Dual Layer disk burned fine. However, now when I try and go back to burning standard DVD-5 disks, by changing the option from DVD-DL back to DVD-5, it treats them as if they are bad blank DVD's inserted in the burner. I've tried multiple manufacturers of blanks, probably 3, maybe 4, still wont let me, says "Please Insert blank media"...or something to that tune. Any ideas? I've been using this software to burn single layer movies for a while, never had a problem until I changed that setting to DL for a couple movies.