System Update error Fedora 10

[Leslie Satenstein]

Error Type: <type
'exceptions.TypeError'>
Error Value: 'NoneType'
object is unsubscriptable
  File :
/usr/share/PackageKit/helpers/yum/yumBackend.py, line 2314, in
<module>
    main()
  File :
/usr/share/PackageKit/helpers/yum/yumBackend.py, line 2311, in main
    backend.dispatcher(sys.argv[1:])
  File :
/usr/lib/python2.5/site-packages/packagekit/backend.py, line 600, in
dispatcher
    self.dispatch_command(args[0],
args[1:])
  File :
/usr/lib/python2.5/site-packages/packagekit/backend.py, line 508, in
dispatch_command
    self.get_updates(filters)
  File :
/usr/share/PackageKit/helpers/yum/yumBackend.py, line 1768, in
get_updates
    self._check_init()
  File :
/usr/share/PackageKit/helpers/yum/yumBackend.py, line 1995, in
_check_init
    self.yumbase.repos.doSetup()
  File :
/usr/lib/python2.5/site-packages/yum/repos.py, line 71, in doSetup
   
self.ayum.plugins.run('postreposetup')
  File :
/usr/lib/python2.5/site-packages/yum/plugins.py, line 178, in run
    func(conduitcls(self, self.base,
conf, **kwargs))
  File :
/usr/lib/yum-plugins/rpm-warm-cache.py, line 32, in
postreposetup_hook
    cmd = commands[0]


Any ideas about how I repair it?  Anyone else experiencing this problem?

-------------
Regards  
Leslie
 

 
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