When I tried running YUM with anything, I got this message.Can anyone suggest a fix for this? I've tried as me, as me with sudo, and as root. Same error. [kebbelj@localhost kebbelj]$ yum install libstdc++devel Traceback (most recent call last): File "/usr/bin/yum", line 22, in ? import yummain ImportError: Bad magic number in /usr/share/yum/yummain.pyc