Your documentation points to a README.ks file in the doc directory and this doesn't exist. Secondly, your kickstart documentation states to use 'en' for lang and this is in accurate as well. One of our engineers was lucky enough to find the actual lang variable of 'en_US' only as a matter of perseverance and a lot of time. Please correct your documentation and make this README.ks file available to us somehow.
Kickstart instructions will be resolved in the next release of documentation
Sorry for the mixup on 6.1; we've resolved this for the next release. Thanks for letting us know...