An updated system-config-kickstart package that fixes a bug is now available for Red Hat Enterprise Linux 6.
The system-config-kickstart package contains Kickstart Configurator, a graphical tool for creating kickstart files.
The system-config-kickstart utility terminated with a traceback if it was executed outside of a graphical environment. This problem has been fixed: the utility starts correctly in a graphical environment or displays an error message if the X Window System is not running.
All users of system-config-kickstart are advised to upgrade to this updated package, which resolves this bug.