gstreamer errors 'could not link audioscale0 to waveenc0' when burning cd

[Jamie Wilkinson]

Ubuntu Breezy on a powerbook, upgraded from hoary using aptitude dist-upgrade.

serpentine can add files, but when the 'Write to Disc' button is pressed, a
dialog appears:

"Converting files failed

Writing to disc disn't start so it is still usable."

~/.xsession-errors reports messages like so:

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/serpentine/converting.py", line 71, in
start
    self.__oper = self.__pool.fetch_music (self.__music)
  File "/usr/lib/python2.4/site-packages/serpentine/converting.py", line 194, in
fetch_music
    oper = audio.sourceToWav (source, sink)
  File "/usr/lib/python2.4/site-packages/serpentine/audio.py", line 339, in
sourceToWav
    bin = gst.parse_launch (
GError: could not link audioscale5 to wavenc5

(the number after audioscale and waveenc increases each time the button is
pressed, and is reset to 0 when the app is restarted)

I have gstreamer0.8 plugins installed.

[Tiago Cogumbreiro (cogumbreiro)]

This seems very simillar to bug 22501. However I still haven't found a way to
reproduce it.

This bug has been marked as a duplicate of bug 22501.