I used AnyDVD to rip my copy of Spiderman 3. I then used Nero 8 Ultra, with the purchased BluRay module, to create a UDF copy on a 25 GB Sony BD-RE. Used my new LG 20L Blu Ray burner. When I put the copied disc in the burner to play, it plays perfectly with Power DVD. When I try to open it with Nero 8 Ultra Showtime, I get the following message:" Sorry, the folder you have selected does not contain a valid DVD Video structure. Please use Media Files function to browse and play files from this folder" When I put the original Spiderman 3 disc in the burner, it opens and plays perfectly with Power DVD and also with Nero 8 Showtime. I am thinking that Nero8 Showtime, doesn't support BD-RE playback at this time. Anyone have ideas? Thanks.