Mayday! Installer crash! Need help!

[BrillianceLin]

Last time I turn on my laptop, everting was normal. After shut her down and turn it on again, I can no longer use all sofware managemnt pograms (e.g. program>add/remover sofeware and yumex). Although the yum still working, The system says it is a bug, but after I reboot the system it still will not go away.

When I run "yumex" the erro is like this

Error in routine: BackgroundRunner
Error Type: yum.comps.CompsException
Error Value:
Traceback:

('/usr/lib/python2.4/site-packages/yumex/yumexUtils.py', 1548, 'run', 'self.rc = self.runfunc( *self.args )')
File : /usr/lib/python2.4/site-packages/yumex/yumexUtils.py , line 1548, in run
self.rc = self.runfunc( *self.args )
('/usr/lib/python2.4/site-packages/yumex/yumexBase.py', 315, 'load_repo_data', 'self.doGroupSetup()')
File : /usr/lib/python2.4/site-packages/yumex/yumexBase.py , line 315, in load_repo_data
self.doGroupSetup()
('/usr/lib/python2.4/site-packages/yumex/yumexBase.py', 341, 'doGroupSetup', 'yum.YumBase.doGroupSetup( self )')
File : /usr/lib/python2.4/site-packages/yumex/yumexBase.py , line 341, in doGroupSetup
yum.YumBase.doGroupSetup( self )
('/usr/lib/python2.4/site-packages/yum/__init__.py', 408, 'doGroupSetup', 'self.comps.add(groupfile)')
File : /usr/lib/python2.4/site-packages/yum/__init__.py , line 408, in doGroupSetup
self.comps.add(groupfile)
('/usr/lib/python2.4/site-packages/yum/comps.py', 339, 'add', 'group = Group(elem)')
File : /usr/lib/python2.4/site-packages/yum/comps.py , line 339, in add
group = Group(elem)
('/usr/lib/python2.4/site-packages/yum/comps.py', 57, '__init__', 'self.parse(elem)')
File : /usr/lib/python2.4/site-packages/yum/comps.py , line 57, in __init__
self.parse(elem)
('/usr/lib/python2.4/site-packages/yum/comps.py', 133, 'parse', 'self.parse_package_list(child)')
File : /usr/lib/python2.4/site-packages/yum/comps.py , line 133, in parse
self.parse_package_list(child)
('/usr/lib/python2.4/site-packages/yum/comps.py', 143, 'parse_package_list', 'raise CompsException')
File : /usr/lib/python2.4/site-packages/yum/comps.py , line 143, in parse_package_list
raise CompsException
Component: yumex
Version: 1.2.2
Summary: TB03120a34 yumexmain.py:1045:_runBackgroundompsException

Traceback (most recent call last):
File "/usr/share/yumex/yumexmain.py", line 1108, in ?
mainApp = YumexMainApplication()
File "/usr/share/yumex/yumexmain.py", line 541, in __init__
self.setup_yum()
File "/usr/share/yumex/yumexmain.py", line 992, in setup_yum
if self._runBackground( self.yumexbase.load_repo_data, rload ):
File "/usr/share/yumex/yumexmain.py", line 1045, in _runBackground
raise self.backgroundThread.exception
CompsException

Local variables in innermost frame:
runfunc: <bound method yumexBase.load_repo_data of <yumex.yumexBase.yumexBase object at 0xa2b9d6c>>
args: (False,)
self: <__main__.YumexMainApplication instance at 0xa2ae1cc>


I run add/remove sofeware this show up.

Component: Software Manager
Summary: TB8a9160cb comps.py:143arse_package_listompsException

Traceback (most recent call last):
File "/usr/sbin/pirut", line 453, in ?
main()
File "/usr/sbin/pirut", line 449, in main
pm.run()
File "/usr/sbin/pirut", line 358, in run
self.doRefresh()
File "/usr/sbin/pirut", line 373, in doRefresh
self.reposSetup(pbar)
File "/usr/lib/python2.4/site-packages/pirut/__init__.py", line 153, in reposSetup
self.doGroupSetup()
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 408, in doGroupSetup
self.comps.add(groupfile)
File "/usr/lib/python2.4/site-packages/yum/comps.py", line 339, in add
group = Group(elem)
File "/usr/lib/python2.4/site-packages/yum/comps.py", line 57, in __init__
self.parse(elem)
File "/usr/lib/python2.4/site-packages/yum/comps.py", line 133, in parse
self.parse_package_list(child)
File "/usr/lib/python2.4/site-packages/yum/comps.py", line 143, in parse_package_list
raise CompsException
CompsException

Local variables in innermost frame:
genre: optinoal
self: Graphics
package: digikam
packagelist_elem: <Element 'packagelist' at 0x95e3c98>
child: <Element 'packagereq' at 0x95e3ba8>

I never tough the porgram, and it ran find berfore. Why it no longer works? I am new in Linux, and I just use FC6 for little bit more than 1month and I have reinstall it 3 times. I do not want to reinstall the 4th time. Can any one tell me how to sove this problem.