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java.lang.NullPointerException: 	at farseek.block.package$$anonfun$naturalStoneBlocks$1.apply(package.scala:63)	at farseek.block.package$$anonfun$naturalStoneBlocks$1.apply(package.scala:63)	at scala.collection.TraversableLike$$anonfun$filterImpl$1.apply(TraversableLike.scala:259)	at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)	at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)	at scala.collection.TraversableLike$class.filterImpl(TraversableLike.scala:258)	at scala.collection.TraversableLike$class.filter(TraversableLike.scala:270)	at scala.collection.mutable.ArrayOps$ofRef.filter(ArrayOps.scala:186)	at farseek.block.package$.dictionaryBlocksAndData(package.scala:72)	at farseek.block.package$.dictionaryBlocks(package.scala:68)	at farseek.block.package$.naturalStoneBlocks$lzycompute(package.scala:63)	at farseek.block.package$.naturalStoneBlocks(package.scala:64)	at farseek.block.package$BlockValue$.isNaturalStone$extension(package.scala:83)	at farseek.block.package$BlockValue$.isGround$extension(package.scala)	at streams.world.gen.structure.RiverComponent$$anonfun$build$2$$anonfun$apply$3.apply(RiverComponent.scala:275)	at streams.world.gen.structure.RiverComponent$$anonfun$build$2$$anonfun$apply$3.apply(RiverComponent.scala:274)	at scala.collection.TraversableViewLike$TakenWhile$$anonfun$foreach$5.apply(TraversableViewLike.scala:207)	at scala.collection.TraversableViewLike$Mapped$$anonfun$foreach$2.apply(TraversableViewLike.scala:169)	at scala.collection.Iterator$class.foreach(Iterator.scala:743)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1174)	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)	at scala.collection.SeqLike$$anon$2.foreach(SeqLike.scala:638)	at scala.collection.TraversableViewLike$Mapped$class.foreach(TraversableViewLike.scala:168)	at scala.collection.SeqViewLike$$anon$3.foreach(SeqViewLike.scala:186)	at scala.collection.TraversableViewLike$TakenWhile$class.foreach(TraversableViewLike.scala:205)	at scala.collection.SeqViewLike$$anon$8.foreach(SeqViewLike.scala:191)	at streams.world.gen.structure.RiverComponent$$anonfun$build$2.apply(RiverComponent.scala:274)	at streams.world.gen.structure.RiverComponent$$anonfun$build$2.apply(RiverComponent.scala:265)	at scala.collection.TraversableLike$WithFilter$$anonfun$foreach$1.apply(TraversableLike.scala:778)	at scala.collection.Iterator$class.foreach(Iterator.scala:743)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1174)	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)	at scala.collection.TraversableLike$WithFilter.foreach(TraversableLike.scala:777)	at streams.world.gen.structure.RiverComponent.build(RiverComponent.scala:265)	at farseek.world.gen.structure.StructureComponent.build(StructureComponent.scala:19)	at farseek.world.gen.structure.Structure$$anonfun$build$2.apply(Structure.scala:37)	at farseek.world.gen.structure.Structure$$anonfun$build$2.apply(Structure.scala:37)	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)	at farseek.world.gen.structure.Structure.build(Structure.scala:37)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1$$anonfun$apply$3$$anonfun$apply$4.apply(RiverGenerator.scala:61)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1$$anonfun$apply$3$$anonfun$apply$4.apply(RiverGenerator.scala:61)	at scala.Option.foreach(Option.scala:245)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1$$anonfun$apply$3.apply(RiverGenerator.scala:61)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1$$anonfun$apply$3.apply(RiverGenerator.scala:61)	at scala.Option.foreach(Option.scala:245)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1.apply(RiverGenerator.scala:61)	at streams.world.gen.structure.RiverGenerator$$anonfun$build$1.apply(RiverGenerator.scala:60)	at scala.collection.immutable.Set$Set1.foreach(Set.scala:83)	at streams.world.gen.structure.RiverGenerator.build(RiverGenerator.scala:60)	at farseek.world.gen.structure.StructureGenerator.onPrePopulateChunk(StructureGenerator.scala:75)	at cpw.mods.fml.common.eventhandler.ASMEventHandler_271_StructureGenerator_onPrePopulateChunk_Pre.invoke(.dynamic)	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)	at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:377)	at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:279)	at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1040)	at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:190)	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:131)	at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101)	at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:199)	at net.minecraft.world.World.func_72964_e(World.java:419)	at net.minecraft.world.World.func_147439_a(World.java:345)	at plantmegapack.worldgen.PMPGenBase.isAdjacentToBlockMaterial(PMPGenBase.java:355)	at plantmegapack.worldgen.PMPSpawnLocation.getSpawnLocationData(PMPSpawnLocation.java:103)	at plantmegapack.worldgen.PMPWorldGenerator.generateSurface(PMPWorldGenerator.java:80)	at plantmegapack.worldgen.PMPWorldGenerator.generate(PMPWorldGenerator.java:42)	at cpw.mods.fml.common.registry.GameRegistry.farseek_core_FarseekClassTransformer_cpw_mods_fml_common_registry_GameRegistry_generateWorld(GameRegistry.java:112)	at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at farseek.core.ReplacedMethod.apply(MethodReplacementTransformer.scala:114)	at farseek.world.gen.ChunkGeneratorExtensions$.generateWorld(ChunkGeneratorExtensions.scala:17)	at farseek.world.gen.ChunkGeneratorExtensions.generateWorld(ChunkGeneratorExtensions.scala)	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java)	at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:280)	at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1045)	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:52)	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12)	at net.minecraftforge.common.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:189)	at net.minecraftforge.common.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:354)	at net.minecraftforge.common.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:596)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)