Yum error - "Error in YUM setup" after updating

[Paul Howarth]

Arch Willingham wrote:
> The other night, I ran YUMEX like normal (FC6, test2). It did its update like normal and updated about twenty packages. On of the packages it said it updated was "yum.noarch 2.9.5-3". After I rebooted, I tried to rum YUMEX and it immediatly popped up with "Error in YUM setup". Once I quit YUMEX, it gives an "Exception occured" and says this: 
> 
> 
> Component: yumex
> Version: 1.1.2
> Summary: TBba6c5a2b __init__.py:554:doUnlock:AttributeError: 'yumexBase' object has no attribute 'conf'
> 
> Traceback (most recent call last):
>   File "/usr/share/yumex/yumexmain.py", line 250, in on_FileQuit
>     self.delete_event()
>   File "/usr/share/yumex/yumexmain.py", line 654, in delete_event
>     self.yumexbase.doUnlock( const.YUM_PID_FILE )
>   File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 554, in doUnlock
>     if self.conf.uid != 0:
> AttributeError: 'yumexBase' object has no attribute 'conf'
> 
> Local variables in innermost frame:
> self: <yumex.yumexBase.yumexBase object at 0x9bd0b2c>
> lockfile: /var/run/yum.pid
> 
> 
> If I type YUM from teh command line, I get this error:
> 
> 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 85, in main
>     base.getOptionsConfig(args)
>   File "/usr/share/yum-cli/cli.py", line 183, in getOptionsConfig
>     errorlevel=opts.errorlevel)
>   File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 123, in doConfigSetup
>     startupconf.pluginconfpath)
>   File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 227, in doPluginSetup
>     plugin_types, confpath)
>   File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 128, in __init__
>     self._importplugins(types)
>   File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 169, in _importplugins
>     self._loadplugin(modulefile, types)
>   File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 185, in _loadplugin
>     module = imp.load_module(modname, fp, pathname, description)
>   File "/usr/lib/yum-plugins/installonlyn.py", line 23, in ?
>     from yum.packages import YumInstalledPackage, comparePoEVR
> ImportError: cannot import name comparePoEVR

You really need to be on fedora-test-list and/or fedora-devel-list if 
you're running test releases. This problem (and a fix) was mentioned on 
fedora-devel-list yesterday.

Paul.