langsupport --default=en_US.UTF-8 en_US.UTF-8
Is this an FC4 or a Rawhide install? The langsupport keyword has been removed from kickstart in Rawhide and will cause an error to be printed on the screen explaining how it's deprecated.
firstboot --
This might be it. Is there supposed to be anything after the -- that got mangled in your post? - Chris
