All I can offer is advice: backup your backups. I bought Bryce and Poser both at the beginning of the year. After I got the feel of them, I spent a couple weeks intensely scouring the net for freestuff and put all my finds on CD. Fine. Except no more did I get a disc fairly well filled when all of a sudden...I couldn't access most of it! It denied the existence of most of my stuff. Oh, it admitted that 400 megs were filled, and yet most of my folders just didn't show up. So, after a whole day of screaming, kicking, and hair pulling, trying ever approach I could think of, I chucked the disk and started over. Now I have two identical disks of everything, just in case. Of course, now that I'm prepared, I've never had any more problems, although switching brands may have helped, too. I use Fujifilm, now, with great results. It was Memorex that gave me all the trouble. Maybe I got the one bum disk they ever made, I don't know, but when I use a dozen Fujifilm disks extensively with no trouble, and lost a whole lot of work with one of the only two Memorex discs I ever bought, I'm not going back! Even if all your files show up when you go in through My Computer or whatever, maybe the disc is screwed up and has corrupted the files somehow?