[apport] gaphor crashed with TypeError: Cannot create a consistent method resolution

[crazy]

Binary package hint: gaphor

I installed the programer,but I didn't loaded.

ProblemType: Crash
Architecture: i386
Date: Tue May 8 23:23:39 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gaphor
InterpreterPath: /usr/bin/python2.5
Package: gaphor 0.8.1-5.1ubuntu1
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gaphor
ProcCwd: /home/crazy
ProcEnviron:
 LANGUAGE=zh_CN:zh
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/gaphor']
SourcePackage: gaphor
Traceback:
 TypeError: Cannot create a consistent method resolution
 order (MRO) for bases GObject, CanvasGroupableIface, CanvasGroupable
Uname: Linux crazy-desktop 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux