Error Type: <class 'yum.Errors.PackageSackError'>
Error Value: No Package Matching preupgrade
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 2202, in <module>
    main()
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 2199, in main
    backend.dispatcher(sys.argv[1:])
  File : /usr/lib/python2.5/site-packages/packagekit/backend.py, line 599, in dispatcher
    self.dispatch_command(args[0], args[1:])
  File : /usr/lib/python2.5/site-packages/packagekit/backend.py, line 503, in dispatch_command
    self.get_distro_upgrades()
  File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1660, in get_distro_upgrades
    pkgs = self.yumbase.pkgSack.returnNewestByName(name='preupgrade')
  File : /usr/lib/python2.5/site-packages/yum/packageSack.py, line 399, in returnNewestByName
    raise PackageSackError, 'No Package Matching $s' $ ui_pats