CRASH

---- Minecraft Crash Report ----
// I let you down. Sorry :(

Time: 7/18/14 4:30 PM
Description: Exception getting block type in world

java.lang.NullPointerException
	at net.minecraft.world.World.getBlockMaterial(World.java:598)
	at net.minecraft.world.gen.feature.WorldGenDungeons.generate(WorldGenDungeons.java:34)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:570)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:258)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1243)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
	at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:166)
	at net.minecraft.world.World.getChunkFromChunkCoords(World.java:529)
	at net.minecraft.world.World.getBlockId(World.java:414)
	at net.minecraft.world.World.notifyBlockOfNeighborChange(World.java:838)
	at net.minecraft.world.World.notifyBlocksOfNeighborChange(World.java:790)
	at net.minecraft.world.World.notifyBlockChange(World.java:741)
	at net.minecraft.world.World.setBlock(World.java:573)
	at net.minecraft.world.World.setBlock(World.java:721)
	at sometimesHardcoreSometimes.WorldGenInfectedTree.generate(WorldGenInfectedTree.java:116)
	at sometimesHardcoreSometimes.WorldGenInfectedTree.generate(WorldGenInfectedTree.java:445)
	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:103)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:259)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1253)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:294)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:90)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:107)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at net.minecraft.world.World.getBlockMaterial(World.java:598)
	at net.minecraft.world.gen.feature.WorldGenDungeons.generate(WorldGenDungeons.java:34)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:570)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:258)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1243)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
	at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:166)
	at net.minecraft.world.World.getChunkFromChunkCoords(World.java:529)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (0,4,-17), Chunk: (at 0,0,15 in 0,-2; contains blocks 0,0,-32 to 15,255,-17), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Stacktrace:
	at net.minecraft.world.World.getBlockId(World.java:414)
	at net.minecraft.world.World.notifyBlockOfNeighborChange(World.java:838)
	at net.minecraft.world.World.notifyBlocksOfNeighborChange(World.java:790)
	at net.minecraft.world.World.notifyBlockChange(World.java:741)
	at net.minecraft.world.World.setBlock(World.java:573)
	at net.minecraft.world.World.setBlock(World.java:721)
	at sometimesHardcoreSometimes.WorldGenInfectedTree.generate(WorldGenInfectedTree.java:116)
	at sometimesHardcoreSometimes.WorldGenInfectedTree.generate(WorldGenInfectedTree.java:445)
	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:103)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:259)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1253)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:153)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:294)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:90)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:107)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
	at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Mac OS X (x86_64) version 10.9.3
	Java Version: 1.6.0_65, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 955321376 bytes (911 MB) / 1065025536 bytes (1015 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	FML: MCP v8.11 FML v6.4.45.953 Minecraft Forge 9.11.1.953 4 mods loaded, 4 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	FML{6.4.45.953} [Forge Mod Loader] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	Forge{9.11.1.953} [Minecraft Forge] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	sometimes_hardcore{0.1.2} [sometimes] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'