ym broken

[root@colossus ~]# yum
/usr/lib/yum-plugins/fedorakmod.py:25: DeprecationWarning: the sets module is deprecated
  from sets import Set
Loaded plugins: aliases, allowdowngrade, dellsysidplugin2, downloadonly,
              : fastestmirror, fedorakmod, filter-data, keys, merge-conf, post-
              : transaction-actions, presto, priorities, protect-packages,
              : protectbase, refresh-packagekit, refresh-updatesd, rpm-warm-
              : cache, security, tmprepo, upgrade-helper, verify, versionlock
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 309, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 157, in main
    base.getOptionsConfig(args)
  File "/usr/share/yum-cli/cli.py", line 189, in getOptionsConfig
    self.conf
  File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 652, in <lambda>
    conf = property(fget=lambda self: self._getConfig(),
  File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 237, in _getConfig
    startupconf.pluginconfpath,disabled_plugins,enabled_plugins)
  File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 408, in doPluginSetup
    plugin_types, confpath, disabled_plugins, enabled_plugins)
  File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 163, in __init__
    self.run('config')
  File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 180, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/yum-plugins/tmprepo.py", line 179, in config_hook
    parser.values.tmp_repos = []
AttributeError: OptionGroup instance has no attribute 'values'