I have a similar problem. All files I have added to My Book Live after 10/9/11 are not appearing on Twonky in my PS3. I bought MBL about 1 months ago and have only been adding videos. I can check them on my PC and have 15 MP4's and 3 AVI's, but when I check on my PS3 it only shows 8 MP4's and 1 AVI, all added prior to Oct 9, 2011. I restarted and unplugged both, the PS3 and the MBL, but nothing. I am also currently doing a TWONKY rescan on the MBL under Settings> Media> Twonky> Status, but it has been going on for over an hour now. At the moment it shows Versions 5.1.9, Last database update- in progress, Music track -, Pictures-, Video 9 (the same number I have before Oct 9). I don't know if this rescan should take that long if I only had 18 movies, although the MBL is 3 tera, but those are the only files I currently have, just 18 movies. The files that show on the PS3 work great, it is just that the new ones don't show. Also, all my videos were converted to MP4's using the same software and all can be seen on the laptop, so they are essentially the same file. Any guess to why it doesn't show up in PS3?