If you get the below error then there is a bug files <a href="https://bugzilla.redhat.com/show_bug.cgi?id=476352" target="_blank">here.
Error Type:
Error Value: ’NoneType’ object is unsubscriptable
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 2280, in
main()
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 2277, 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 526, in
dispatch_command
self.refresh_cache()
File : /usr/share/PackageKit/helpers/yum/yumBackend.py, line 1130, in
refresh_cache
self.yumbase.repos.populateSack(which=[repo.id], mdtype=’metadata’,
cacheonly=1)
File : /usr/lib/python2.5/site-packages/yum/repos.py, line 223, in
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