http://www.minecraftforum.net/topic/1468127-151forgebuffarmor-bar-mods-project-zulu-better-overworld-v1020-extrabiomesxl-support-update-gui-mob-spawner/page__st__920#entry21713269

Not sure this is possible. On worldStart is obviously, but it doesn't seem to be possible to single out newly created worlds only. I'll need to Trace through more carefully for first instance of WorldInfo. Assuming a valid location is found, A forge hook may need to be proposed. Which I'm sure others would find useful.

Closed via 672bdf1