Can not creat Ad-Hoc Network

Binary package hint: wicd

The error details:

Starting the Ad-Hoc Network Creation Process...
Traceback (most recent call last):
  File "/usr/share/wicd/wicd/gui.py", line 280, in create_adhoc_network
    False) #chkbox_use_ics.get_active())
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/wicd/wicd-daemon.py", line 1039, in CreateAdHocNetwork
    self.wifi.CreateAdHocNetwork(essid, channel, ip, enctype, key, encused)
  File "/usr/share/wicd/wicd/networking.py", line 722, in CreateAdHocNetwork
    BACKEND.ReleaseDHCP()
AttributeError: 'module' object has no attribute 'ReleaseDHCP'

ProblemType: Crash
Architecture: i386
Date: Fri Nov 6 15:21:51 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/share/wicd/wicd-client.py
InterpreterPath: /usr/bin/python2.6
Package: wicd 1.6.1-3ubuntu1
PackageArchitecture: all
ProcCmdline: python -O /usr/share/wicd/wicd-client.py
ProcEnviron:
 SHELL=/bin/bash
 LANG=zh_CN.UTF-8
 LANGUAGE=zh_CN.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
PythonArgs: ['/usr/share/wicd/wicd-client.py']
SourcePackage: wicd
Title: wicd-client.py crashed with AttributeError in CreateAdHocNetwork()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (gnome-settings-daemon:1704): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:1704): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (polkit-gnome-authentication-agent-1:1806): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:1791): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (gnome-panel:1787): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -5 and height 24