revelaton crash on startup

revelation crash always on startup, the console output is

revelation
Traceback (most recent call last):
  File "/usr/bin/revelation", line 27, in <module>
    from revelation import config, data, datahandler, dialog, entry, io, ui, util
  File "/usr/lib/python2.7/dist-packages/revelation/__init__.py", line 29, in <module>
    import datahandler
  File "/usr/lib/python2.7/dist-packages/revelation/datahandler/__init__.py", line 28, in <module>
    from fpm import FPM
  File "/usr/lib/python2.7/dist-packages/revelation/datahandler/fpm.py", line 27, in <module>
    from revelation import data, entry, util
  File "/usr/lib/python2.7/dist-packages/revelation/data.py", line 26, in <module>
    import datahandler, entry
  File "/usr/lib/python2.7/dist-packages/revelation/entry.py", line 26, in <module>
    from revelation import ui
  File "/usr/lib/python2.7/dist-packages/revelation/ui.py", line 26, in <module>
    import config, data, dialog, entry, io, util
  File "/usr/lib/python2.7/dist-packages/revelation/dialog.py", line 28, in <module>
    import gettext, gnome.ui, gobject, gtk, urllib
ImportError: No module named ui

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: revelation 0.4.11-9ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic-pae 3.0.4
Uname: Linux 3.0.0-11-generic-pae i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Fri Nov 4 12:46:14 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANGUAGE=es:en
 PATH=(custom, no user)
 LANG=es_AR.UTF-8
 LC_MESSAGES=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: revelation
UpgradeStatus: Upgraded to oneiric on 2011-04-12 (206 days ago)