When attempting to burn media onto DVD RW disk with an Iomega external DVD RW combo drive, I get error messages involving the drives innability to recognize the media disk, as well as windows failiure in recognizing the disk format. I know the drive speed and media speed are compatible, and the under the drives properties it seems to recognize the inserted blank DVD as a DVD RW, but it can't seem to burn anything to it. Any idea what the problem could be?