Ubuntu kickstart configuration file fails with error: The file may be corrupt

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http://serverfault.com – I'm trying to install my ubuntu servers with iPXE. I have created the kickstart file with system-config-kickstart, but once downloaded by the installing server, the parsing fails with the error: The installer failed to process the preconfiguration file from http://... The file may be corrupt When looking at /var/lib/preseed/log, the last line is always Syntax error: unable to determine template name which does not provide much help while googling. Here is a working (but incomplete) kickstart file: preseed mirror/country string manual preseed mirror/http/hostname string pr (HowTos)