SysmonitorScreenlet.py crashed with AttributeError in sys_get_window_manager()

Binary package hint: screenlets

1) The release of Ubuntu you are using
9.10
2) The version of the package you are using
0.1.2-7
3) What you expected to happen
I just want to open the manager window via right click menu but never succeeded after upgrading from jaunty to karmic.
4) What happened instead
nothing happened or a crash report dialog popped up which led me here.

output when run in terminal:

~$ screenlets-manager

** (screenlets-manager.py:11947): WARNING **: Trying to register gtype 'WnckWindowState' as flags when in fact it is of type 'GEnum'

** (screenlets-manager.py:11947): WARNING **: Trying to register gtype 'WnckWindowActions' as flags when in fact it is of type 'GEnum'

** (screenlets-manager.py:11947): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as flags when in fact it is of type 'GEnum'
/usr/share/screenlets-manager/screenlets-manager.py:93: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips = gtk.Tooltips()
/usr/share/screenlets-manager/screenlets-manager.py:414: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but1, _('Launch/add a new instance of the selected Screenlet ...'))
/usr/share/screenlets-manager/screenlets-manager.py:415: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but2, _('Install a new Screenlet, SuperKaramba or Web Widget or Web Application ...'))
/usr/share/screenlets-manager/screenlets-manager.py:416: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but3, _('Permanently uninstall/delete the currently selected Screenlet ...'))
/usr/share/screenlets-manager/screenlets-manager.py:417: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but4, _('Reset this Screenlet configuration (will only work if screenlet isnt running)'))
/usr/share/screenlets-manager/screenlets-manager.py:418: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but5, _('Install new theme for this screenlet'))
/usr/share/screenlets-manager/screenlets-manager.py:419: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but6, _('Restart all screenlets that have auto start at login'))
/usr/share/screenlets-manager/screenlets-manager.py:420: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but7, _('Close all Screenlets running'))
/usr/share/screenlets-manager/screenlets-manager.py:421: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but8, _('New Screenlets Options/Properties'))
/usr/share/screenlets-manager/screenlets-manager.py:422: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but9, _('Create a Desktop shortcut for this Screenlet'))
/usr/share/screenlets-manager/screenlets-manager.py:477: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but_about, _('Show info about this dialog ...'))
/usr/share/screenlets-manager/screenlets-manager.py:478: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but_download, _('Download more screenlets ...'))
/usr/share/screenlets-manager/screenlets-manager.py:479: DeprecationWarning: Use the new widget gtk.Tooltip
  self.tips.set_tip(but_close, _('Close this dialog ...'))
True
Starter already exists.
DAEMON FOUND!

GLib-GObject-ERROR **: Attempt to add property GtkMenuBar::local to class after it was derived
aborting...
忽略 (core dumped)

ProblemType: Crash
Architecture: i386
Date: Sun Nov 1 01:55:39 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/share/screenlets/Sysmonitor/SysmonitorScreenlet.py
InterpreterPath: /usr/bin/python2.6
Package: screenlets 0.1.2-7
PackageArchitecture: all
ProcCmdline: python -u /usr/share/screenlets/Sysmonitor/SysmonitorScreenlet.py
ProcEnviron:
 LANGUAGE=zh_CN.UTF-8
 PATH=(custom, user)
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
PythonArgs: ['/usr/share/screenlets/Sysmonitor/SysmonitorScreenlet.py']
SourcePackage: screenlets
Title: SysmonitorScreenlet.py crashed with AttributeError in sys_get_window_manager()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin audio cdrom dialout dip fax fuse lpadmin netdev plugdev sambashare tape video
XsessionErrors:
 (gnome-settings-daemon:2051): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:2051): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:2079): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:2074): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (Do:2085): Wnck-CRITICAL **: wnck_set_client_type got called multiple times.