Error of installing centos from customize kickstart base iso
 

Hi,
This is my first post,and also i am newbie at redhat distributions.I have been trying from many days to make a customize iso using kickstart.I am using a vmware to test the iso.After booting the iso it has created automatically directory as per my kickstart file.After creating the directory it shows the following error,that i can't resolve until now...
"Unable to read package metadata.This may be due to a missing repodata directory.Please ensure that your install tre
has been correctly generated.
cannot find a valid baseurl for repo:Centos"
Your appreciation is highly appreciated.
Thanks
Rokon

Could we see your kickstart file, please?