That is the error you get when you edit the WirelessRedstone.cfg with an editor like VI. It will convert the CRLF line endings to LF. CodeChickenCore can only read CRLF. The solution is to convert your LF line endings back to CRLF.
Check this out for help: http://www.cyberciti.biz/faq/howto-unix-linux-convert-dos-newlines-cr-lf-unix-text-format/