My blank CD-R, DVD+RW & DVD-R are almost always rejected. Roxio recognizes their type (DVD+R, 4.4 GB free). Then it says, “Insert blank disc.” Why? What can I do? After many attempts, I can occasionally write to a DVD+RW and a CD-R. My optical drive is DVD+RW. I have two computers that respond the same to four different types of premium discs. One computer has Roxio Creator DE and the other has Sonic Record Now! The discs have never been used.