I am getting the same symptoms in Xubuntu 13.10, GNOME 3.8.4, Kernel 3.11.0-18-generic, GCC version 4.8 (x86_64-linux-gnu), Xorg version 1.14.5 (17 December 2013 10:06:15AM). It is Ubuntu Software Centre 13.10 Loading it from the command prompt, selection Transmission, and clicking on 'Write your own review' gives this: $ software-center 2014-03-31 21:15:26,716 - softwarecenter.backend.zeitgeist_logger - WARNING - Support for Zeitgeist disabled 2014-03-31 21:15:26,738 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2014-03-31 21:15:26,937 - softwarecenter.region - WARNING - failed to use geoclue: 'org.freedesktop.DBus.GLib.UnmappedError.GeoclueErrorQuark.Code1: Geoclue master client has no usable Address providers' 2014-03-31 21:15:27,308 - softwarecenter.plugin - INFO - activating plugin '' 2014-03-31 21:15:27,314 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')' 2014-03-31 21:15:27,313 - root - ERROR - Could not find any typelib for LaunchpadIntegration 2014-03-31 21:15:27,359 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open() 2014-03-31 21:15:29,718 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/share/software-center/softwarecenter/utils.py', 271, 'get_title_from_html')' 2014-03-31 21:15:29,718 - root - WARNING - failed to parse: '
 
' ('ascii' codec can't encode character u'\xa0' in position 70: ordinal not in range(128)) 2014-03-31 21:15:29,719 - softwarecenter.ui.gtk3.views.lobbyview - WARNING - skipping exhibit for: 'u'amnesia-amfp'' not available 2014-03-31 21:15:29,721 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () 2014-03-31 21:15:29,721 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () (software-center:11339): Gdk-WARNING **: /build/buildd/gtk+3.0-3.8.6/./gdk/x11/gdkwindow-x11.c:5304 drawable is not a native X11 window (software-center:11339): Gdk-WARNING **: /build/buildd/gtk+3.0-3.8.6/./gdk/x11/gdkwindow-x11.c:5304 drawable is not a native X11 window (software-center:11339): Gdk-WARNING **: /build/buildd/gtk+3.0-3.8.6/./gdk/x11/gdkwindow-x11.c:5304 drawable is not a native X11 window 2014-03-31 21:15:32,172 - softwarecenter.region - WARNING - failed to use geoclue: 'org.freedesktop.DBus.GLib.UnmappedError.GeoclueErrorQuark.Code1: Geoclue master client has no usable Address providers' 2014-03-31 21:15:34,547 - softwarecenter.db.utils - INFO - software-center-agent finished with status 0 (software-center:11339): Gtk-WARNING **: Unable to show 'none': Operation not supported 2014-03-31 21:15:40,028 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) () 2014-03-31 21:15:40,029 - softwarecenter.backend.login_impl.login_sso - ERROR - _on_credentials_error for Ubuntu One: dbus.Dictionary({dbus.String(u'errtype'): dbus.String(u'GUINotAvailableError'), dbus.String(u'message'): dbus.String(u'Can not find a GUI to present to the user (tried with "(\'ubuntu-sso-login-qt\', \'ubuntu-sso-login-qt\')"). Aborting.')}, signature=dbus.Signature('ss')) ()