When I try to backup my photos from Olympus Master Plus to a DVD I get a window that says "cannot find writable drive." I know the drive is working because I have been able to backup other files to CD/DVD. When I had Olympus Master Plus on my old computer I did not have any trouble with the backup feature. But since I have installed it on my new computer I am unable to backup to CD/DVD. The operating system is the same (XP). Any suggestions?