The kickstart installation will certainly fail for language values as
prescribed in "The Official Red Hat Linux Reference Guide"
 because todo.py contains the following values
class Language (SimpleConfigFile):
    def __init__ (self):
        self.info = {}
        self.langs =

            "Czech"      : "cs_CZ" ,
            "English"    : "en_US" ,
            "French"     : "fr_FR" ,
            "German"     : "de_DE" ,
            "Hungarian"  : "hu_HU" ,
            "Icelandic"  : "is_IS" ,
            "Indonesian" : "id_ID" ,
            "Italian"    : "it_IT" ,
            "Norwegian"  : "no_NO" ,
            "Polish"     : "pl_PL" ,
            "Romanian"   : "ro_RO" ,
            "Slovak"     : "sk_SK" ,
            "Slovenian"  : "sl_SI" ,
            "Spanish"    : "es_MX" ,
#            "Russian"   : "ru_SU" ,
            "Russian"    : "ru_RU.KOI8-R" ,
          "Ukrainian"  : "uk_UA" ,
            }