[CentOS] HELP! Group info problem

Tue Dec 4 19:38:41 UTC 2007
Robert Moskowitz <rgm at htt-consult.com>

I just tried an install from my local repo (boot from CD 1, use http 
method), and it failed right after entering the root password setting with:

Unable to read group information from repositories.
This is a problem with the generation of your install tree.

Reboot


So now what?  Is there something I can just extract from the isos? 
(remember I did that rsync).

Is this caused by running createrepo after I copied the CDs, and before 
I did the rsync -r (so perhaps my tree info files are newer than those 
on mirror.centos.org)?

HELP?