I have tried burning a video project onto a DVD disk using both DVD Architect and also Click to DVD. In both cases, it does not appear that the DVD burner is reading the blank DVD disk, because once it is inserted, the computer stops responding. I have a Sony Vaio and have updated everything I can think of. The burner will burn CD's, play CD's and DVD's and seems to be fine, so I am puzzled at what the problem is. I don't get an error message on either programs, but with DVD Architect I get "Retrieving media material" and it just stays there and does not progress.