When doing an audio compilation xfburn crashes with ** ERROR **: Gstreamer error while transcoding: Internal data flow error. aborting... This happens when trying to start the burning process. gstreamer version used 0.10.20.
Unfortunately this "internal data flow error" is the most generic error message gstreamer has. AFAIK it just means something went wrong. It'd be interesting to know if this happens to you consistently, or if it was a one time thing. Can you reproduce it? If so, would it be possible to share the audio files you were trying to burn?
I am not able to reproduce it and unfortunately i can not remember the files that caused the issue. If it happens again I will report back.
Without more information I can't really do anything. And there's a chance this was related to bug 5304, so I'm closing this bug. If it happens again, please report and upload the file somewhere (or email it to me) please.