CentOS 6.3 x86_64 and v208: Could not import keybinder, keybindings disabled!

[Jordi Espasa]

# CentOS 6.3 x86_64

[admjoresp@admjoresp ~]$ uname -a
Linux admjoresp 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

# kupfer v208
[admjoresp@admjoresp ~]$ kupfer --version
kupfer v208

Kupfer: A free software (GPLv3+) launcher
 Copyright © 2007--2011 Ulrik Sverdrup with others
 http://kaizer.se/wiki/kupfer/

# I cannot assign Preferences > Shown Main Interface shortcurt

kupfer --debug

[...]
** (kupfer.py:6486): CRITICAL **: cr_parser_destroy: assertion `a_this && PRIVATE (a_this)' failed
D [kupfer.plugin.documents] PlacesSource: Loaded 0 items
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
D [kupfer.plugin.favorites] FavoritesSource: Loaded 2 items
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
Error [kupfer.ui.keybindings]: Could not import keybinder, keybindings disabled!
[...]