Description of problem:

The kickstart GUI crashes after it has been started from the KdE Menu. 

Version-Release number of selected component (if applicable):
2.7.20-1.fc10
Latest update
How reproducible:


Steps to Reproduce:
1.Start kickstart in Kmenu --> System
2. start making a new file
3.
  
Actual results:


Expected results:


Additional info:
Crash Dump:

Component: system-config-kickstart
Summary: TB05ec0f49 rpm-warm-cache.py:32:postreposetup_hook:TypeError: 'NoneType' object is unsubscriptable

Traceback (most recent call last):
  File "/usr/bin/system-config-kickstart", line 90, in <module>
    kickstartGui.kickstartGui(file)
  File "/usr/share/system-config-kickstart/kickstartGui.py", line 170, in __init__
    self.packages_class = packages.Packages(xml, self.ksHandler)
  File "/usr/share/system-config-kickstart/packages.py", line 234, in __init__
    self.y = sckYumBase(callback = d)
  File "/usr/share/system-config-kickstart/packages.py", line 144, in __init__
    self.doTsSetup()
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 86, in doTsSetup
    return self._getTs()
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 101, in _getTs
    self._getTsInfo(remove_only)
  File "/usr/lib/python2.5/site-packages/yum/depsolve.py", line 112, in _getTsInfo
    pkgSack = self.pkgSack
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 592, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 435, in _getSacks
    self.repos.populateSack(which=repos)
  File "/usr/lib/python2.5/site-packages/yum/repos.py", line 223, in populateSack
    self.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]
TypeError: 'NoneType' object is unsubscriptable

Local variables in innermost frame:
conduit: <yum.plugins.PostRepoSetupPluginConduit instance at 0x7f7b950aa290>
commands: None
opts: None