i get an NPE from your mod when i try to generate new world with RTG mod :

java.lang.NullPointerException: Exception in server tick loop
at net.minecraftforge.common.BiomeDictionary.getTypesForBiome(BiomeDictionary.java:206)
at greymerk.roguelike.dungeon.Dungeon.validLocation(Dungeon.java:154)
at greymerk.roguelike.dungeon.Dungeon.generateNear(Dungeon.java:59)
at greymerk.roguelike.dungeon.Dungeon.spawnInChunk(Dungeon.java:138)
at greymerk.roguelike.DungeonGenerator.generate(DungeonGenerator.java:20)
at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:113)
at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:997)
at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:979)
at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:175)
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126)
at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:96)
at net.minecraft.world.World.func_72964_e(World.java:294)
at net.minecraft.world.World.func_175726_f(World.java:289)
at jiraiyah.villageinfo.events.WorldDataCollector.getSpawnChunks(WorldDataCollector.java:83)
at jiraiyah.villageinfo.events.WorldDataCollector.worldLoadEvent(WorldDataCollector.java:70)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_74_WorldDataCollector_worldLoadEvent_Load.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:49)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:95)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:119)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at java.lang.Thread.run(Thread.java:745)

Strange... it's getting a null value back when it asks what the biome at that location is. lovely.

PS: what minecraft version is this? 1.7.10? 1.9?

I opened the same issue in RTG's repo, may help if you guys talk with him there :

https://github.com/Team-RTG/1.9-Realistic-Terrain-Generation/issues/78

Could you try generating a world without structures? It's an option in the menu where you choose the Realistic world type.

it still gives the NPE

Alright, thanks for testing.

no problem, anything i can do i won't waste a single minute to do :D

I can tell you I had the exact same issue, running RTG (with Biomes of Plenty) in 1.9. Forge version 1865.

Appears to be an issue with RTG's biome provider. They plan to investigate the issue during their 1.9 rewrite.