serpentine progress bar will not advance past "preparing files..."

[Adam Wiggins]

Having installed Ubuntu for the first time a few days ago (and being thoroughly
impressed with it all around), I decided to try out CD burning. Inserting a CD
popped up a nice dialog asking what I wanted to do, and I selected Burn Audio.
This launched Serpentine, to which I dragged a couple of .wav files and clicked
Write. This produced a progress dialog, but the bar never advanced (I waited
about ten minutes). The entire time it said "Preparing files..." I tried it
again from scratch and the same thing happened.

Oddly enough by closing Serpentine and then opening the CD-R icon on the gnome
desktop, I was able to drag the same wav files into the space on the file
browser and click "write disc" and that worked just fine.

Is there a log file or something for serpentine that I can produce to help debug
this?

[Tiago Cogumbreiro (cogumbreiro)]

Yes running serpentine from the command line, It's probably an exception that
was thrown and since you have no terminal you can't read it.

[Adam Wiggins (hiro)]

Ok, here it is. By the way I tested it with other files and it works fine - it
seems to be just this group of three files (which are podcasts converted to wav
by mpg321).

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/serpentine/operations.py", line 228, in
 __start_next
    oper.start()
  File "/usr/lib/python2.4/site-packages/serpentine/converting.py", line 67, in
start
    self._send_finished_event (success = operations.SUCCESSFUL)
TypeError: _send_finished_event() got an unexpected keyword argument 'success'
Terminated

Here's a screenshot, too:

http://dusk.org/adam/tmp/serpentine.jpg

By the way, is there any way to kill this window (which is locked up - clicking
"cancel" does not work) easily using the Gnome desktop? I'm used to KDE where
trying to close a window that is hardlocked will produce a dialog asking if you
want to force-kill it, or barring that, you can press ctrl-alt-esc to get a
skull and crossbones and click on the window you want to kill. The only thing I
was able to do here was pop up the system monitor, scroll through a list of 50+
processes, finally figure out that the CD Burner process was named "python", and
kill it there. Not exactly user-friendly.

[Tiago Cogumbreiro (cogumbreiro)]

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