Description of problem:
well well well... this is an older computer but for some reason it looks like yum ran into some issue potentially involving the blacklist portion of the main yum python script.  idk..  Hope this is closed easily.

Version-Release number of selected component:
anaconda-20.25.15-1

The following was filed automatically by anaconda:
anaconda 20.25.15-1 exception report
Traceback (most recent call first):
  File "<string>", line 100, in next
  File "/usr/lib/yum-plugins/blacklist.py", line 47, in exclude_hook
    for event, elem in iterparse(infile):
  File "/usr/lib/python2.7/site-packages/yum/plugins.py", line 188, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 784, in _getSacks
    self.plugins.run('exclude')
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1050, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 904, in _getGroups
    self.pkgSack
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1073, in <lambda>
    comps = property(fget=lambda self: self._getGroups(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 3760, in selectGroup
    if not self.comps.has_group(grpid):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1091, in _selectYumGroup
    self._yum.selectGroup(groupid, group_package_types=pkg_types)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1199, in _applyYumSelections
    self._selectYumGroup("core")
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/yumpayload.py", line 1273, in checkSoftwareSelection
    self._applyYumSelections()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/software.py", line 124, in checkSoftwareSelection
    self.payload.checkSoftwareSelection()
  File "/usr/lib64/python2.7/threading.py", line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 192, in run
    threading.Thread.run(self, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 89, in get
    self.raise_if_error(name)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/software.py", line 174, in ready
    not threadMgr.get(constants.THREAD_CHECK_SOFTWARE) and
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/hubs/__init__.py", line 257, in _updateCompleteness
    spoke.selector.set_sensitive(spoke.ready)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/hubs/__init__.py", line 336, in _update_spokes
    self._updateCompleteness(spoke)
  File "/usr/lib64/python2.7/site-packages/gi/overrides/GLib.py", line 633, in <lambda>
    return (lambda data: callback(*data), user_data)
IOError: [Errno 9] Bad file descriptor

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   initrd=initrd.img inst.stage2=hd:LABEL=Fedora\x2020\x20x86_64 quiet BOOT_IMAGE=vmlinuz 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.11.10-301.fc20.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        20