gst-plugin-scanner crashed with KeyError in <module>()

[programer]

Crash in Rythmbox. Program don't show any files. Plugin don't search any music.

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: libgstreamer0.10-0 0.10.29.4-1
ProcVersionSignature: Ubuntu 2.6.35-7.12-generic 2.6.35-rc4
Uname: Linux 2.6.35-7-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sun Jul 11 12:48:43 2010
ExecutablePath: /usr/lib/gstreamer0.10/gstreamer-0.10/gst-plugin-scanner
ProcCmdline: /usr/lib/gstreamer0.10/gstreamer-0.10/gst-plugin-scanner -l
ProcEnviron:
 LANG=pl_PL.utf8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10
Title: gst-plugin-scanner crashed with KeyError in <module>()
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/pygst.py", line 28, in <module>
     import sys
 KeyError: 'pygst'
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #589047, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.