Hi there and welcome to the forum!
Did the burn process start and at some point you got the error? This usually is a write error associated with the layer break point. You have not mentioned anything on the recorder/media used. I would approach this problem by doing the following:
- Update my recorders firmware to the latest
- If the media used are of questionable quality (and they can easily be just that) i would change them to something better - ie Verbatim DL+R
- Update ConvertXtoDVD to the latest.
If problem persists try using another software to burn the data - nero can do it just fine.