When I first spawn in i do spawn on the spawn island but when i run the /createislandfor i just get dumped into the void with no island

ItsBecauseNoGoodSpawn Config

YUNoMakeGoodMap Config

FML-Log

Doesn't appear to be any errors in the logs so am I doing something incorrectly ??

Only YUNMGM is mine, you can use it's /platform command to create a platform. I have no idea how the other mod works.