I'm using Sonic MyDVD that came with MS3. When I first tried it, it burned with no problems. I was able to create a 5 min movie just as a test. I haven't tried to burn anything esle until yesterday, when I had enough video footage to fill up the disk. I have it set up so that each video clip is a differnt file and from the disk menu you can go right to that clip. When I tried burning it yesterday, it would burn the first clip just fine, but then I got a message that the file (it didn't say what file) wasn't a vald mpg file and it ejected the disk. I made sure that all the files I was tring to burn had been rendered as mpeg2. The only thing I can think of is I changed the name of the file in the disk menu, but I didn't think that would make a differnce. Any thoughts or suggestions?