Annoying error..

Unknown faction specified: column 20, row 9

FN_FREE21



The above is related to a custom faction i was making. How do i define "FN_FREE21" so that the game works fine? I've currently done everything else i need to do to get it running so which file have i forgotten?

EDIT:
I would like to play the game sometime instead of waiting a week for someone to answer.. the error was coming from the CRUSADER_BUILD_PROD13 file if that helps any.

EDIT:
I did not literally mean a week.. oh well, apparently noone can answer. Shows how active this community is and you all cling to dreams of open source code