Quodlibet does not start with quodlibet-plugins installed

Binary package hint: quodlibet-plugins

Hello

If the package quodlibet-plugins is installed, quodlibet does not start anymore. Below ist the error that the system produces, when starting quodlibet from the bash. I am using Natty Narwahl Alpha 1.

Audio-Backend (gstbe) wird initialisiert
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
Hauptbibliothek (~/.quodlibet/songs) wird initialisiert
Unterstützte Formate: mp3, mp4, mpc, spc, trueaudio, wav, wavpack, wma, xiph
W: »python-gpod« konnte nicht importiert werden, iPod-Unterstützung wurde deaktiviert.
Traceback (most recent call last):
  File "/usr/bin/quodlibet", line 289, in <module>
    main()
  File "/usr/bin/quodlibet", line 47, in main
    from quodlibet import widgets
  File "/usr/lib/pymodules/python2.7/quodlibet/__init__.py", line 120, in import_ql
    try: return old_import(module, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/quodlibet/widgets.py", line 17, in <module>
    from quodlibet.plugins.editing import EditingPlugins
ImportError: cannot import name EditingPlugins

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: quodlibet-plugins (not installed)
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Mon Jan 10 07:15:33 2011
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100113)
ProcEnviron:
 LANGUAGE=de_CH:de_CH.UTF-8:de:en_GB:en
 LANG=de_CH.UTF-8
 LC_MESSAGES=de_CH.utf8
 SHELL=/bin/bash
SourcePackage: quodlibet-plugins