If you make a custom mod, what do you have to do to get it to work on PBW? In my case, I just combined DevNull and PvK Balance (which makes changes to settings.txt, racialTraits.txt, and cultures.txt).
You have to get Geoschmo to set the mod up on PBW. Easiest way is to upload it to the mods section of the PBW file library and either make a request in the admin request forum or email him.