The whole server crashes on startup when using with Sponge, I uploaded the crash-log here

Sponge is not supported, use Spigot or Forge.

@MCPitman I used SpongeForge, it is Forge and Sponge is just a mod which loads plugins. I forgot to mention that. So this is actually a mod compatibility problem. Can you possibly say what's happening there, so I can try to compile it to fit on my server:

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Open Terrain Generator (openterraingenerator) Caused by: java.lang.NullPointerException at com.khorn.terraincontrol.forge.TCDimensionManager.RemoveTCDims(TCDimensionManager.java:469)