Hello, I have just purchased DMC and have the same problem. I've followed the suggestions given here and in the Troubleshooting compatibility issues section, with no results. I continue to receive the response that DMC does not support files of less than 1 second. What's more, it suggests to make sure this file is playable in Windows Media Player. There is a button in this message window to do just that. Clicking the button results in WMP opening and the VOB file I wish to add and convert, play with no problem. So I know that's good. I'm running Vista and have converted MOV to WMV already with no problems. It seems DMC recognizes the VOB file, it just won't do anything with it. Any help is appreciated.