pybackpack crashed with AttributeError in do_cdr_backup()

[Jeff Bronks]

Binary package hint: pybackpack

Ubuntu 8.04.
pybackup 1.5.4-1
Tried to burn about 86 MB onto a CD using File Backup Manager.
A blank CD was in the drive.
It finished building the CD image, then asked me to insert a blank CD (despite already having one in the drive).
I clicked OK and it crashed.

ProblemType: Crash
Architecture: i386
Date: Wed Apr 30 20:45:15 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/pybackpack
InterpreterPath: /usr/bin/python2.5
Package: pybackpack 0.5.4-1
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/pybackpack
ProcEnviron:
 PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/pybackpack']
SourcePackage: pybackpack
Title: pybackpack crashed with AttributeError in do_cdr_backup()
Uname: Linux 2.6.24-16-rt i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video

[Jeff Bronks (jeffb-dsl)]

This crash leaves some rubbish in /tmp/pybackpack.cdimage, so that a second attempt to run File Backup Manager produces the error

  "An error occurred while setting up the temporary CD
  image directory '/tmp/pybackpack.cdimage/'.
  Please ensure you have write access to this location."

I do have write access to this location, as you can see from this shell session:

  me@computer:/tmp$ ls -l pybackpack.cdimage/
  total 4
  drwxr-xr-x 3 me me 4096 2008-03-22 21:01 home

but there must be some files inside that have different permissions. If I chmod 777 the whole directory then File Backup Manager gets past this point, until it crashes again when it tries to write the CD.