software-center crashes last update ..

after upgrading I could not restart the software-center .... Any help?

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# software-center
2012-09-09 01:22:31,468 - softwarecenter - INFO - Using data (UI, xapian) from current dir
2012-09-09 01:22:31,665 - softwarecenter.ui.gtk3.app - ERROR - could not initiate dbus
Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1290, in setup_dbus_or_bring_other_instance_to_front
    bus = dbus.SessionBus()
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 211, in __new__
    mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 100, in __new__
    bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 122, in __new__
    bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
2012-09-09 01:22:31,692 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-09-09 01:22:31,700 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:34:20: Not using units is deprecated. Assuming 'px'.

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:34:22: Not using units is deprecated. Assuming 'px'.

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:56:20: Not using units is deprecated. Assuming 'px'.

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:56:22: Not using units is deprecated. Assuming 'px'.

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:60:20: Not using units is deprecated. Assuming 'px'.

(software-center:11895): Gtk-WARNING **: Theme parsing error: softwarecenter.css:60:22: Not using units is deprecated. Assuming 'px'.
2012-09-09 01:22:31,754 - softwarecenter.region - WARNING - failed to use geoclue: 'org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.'
2012-09-09 01:22:32,071 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2012-09-09 01:22:32,078 - softwarecenter.utils - ERROR - could not check for dbus service com.canonical.Unity
Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/utils.py", line 376, in is_dbus_service_running
    bus = dbus.SessionBus()
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 211, in __new__
    mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 100, in __new__
    bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 122, in __new__
    bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
2012-09-09 01:22:32,081 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')'
2012-09-09 01:22:32,081 - root - ERROR - Could not find any typelib for LaunchpadIntegration
2012-09-09 01:22:32,249 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None.
2012-09-09 01:22:32,634 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()

** (software-center:11895): WARNING **: Unable to create Ubuntu Menu Proxy: La conexión está cerrada

(software-center:11895): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: La conexión está cerrada
Traceback (most recent call last):
  File "/usr/bin/software-center", line 185, in <module>
    app.run(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1418, in run
    self.show_available_packages(args)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1356, in show_available_packages
    self.view_manager.set_active_view(ViewPages.AVAILABLE)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 151, in set_active_view
    view_widget.init_view()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 142, in init_view
    SoftwarePane.init_view(self)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 156, in init_view
    from softwarecenter.ui.gtk3.views.appdetailsview import (
  File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appdetailsview.py", line 57, in <module>
    from softwarecenter.ui.gtk3.widgets.labels import HardwareRequirementsBox
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/labels.py", line 25, in <module>
    class HardwareRequirementsLabel(Gtk.HBox):
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/labels.py", line 34, in HardwareRequirementsLabel
    'no': u'<span foreground="red">%s</span>' % _(u'\u2718'),
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)

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ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: software-center 5.3.11
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic i686
ApportVersion: 2.5.1-0ubuntu7
Architecture: i386
Date: Sun Sep 9 01:22:48 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120903)
PackageArchitecture: all
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)