[root@RedHat1 CentOs]# yum install mc
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
No Repositories Available to Set Up
Reading repository metadata in from local files
Parsing package install arguments
Traceback (most recent call last):
  File "/usr/bin/yum", line  29 , in ?
    yummain.main(sys.argv[ 1 :])
  File "/usr/share/yum-cli/yummain.py", line  94 , in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line  381 , in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line  134 , in doCommand
    return base.installPkgs(extcmds)
  File "/usr/share/yum-cli/cli.py", line  553 , in installPkgs
    exactmatch, matched, unmatched = \
  File "/usr/lib/python2.4/site-packages/yum/packageSack.py", line  360 , in matchPackageNames
    unmatched = list(unmatched)
TypeError: iteration over non-sequence