Minecraft Crash log

---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 3/31/14 5:26 PM
Description: Exception getting block type in world

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Random.java:265)
	at net.minecraft.world.biome.BiomeDecorator.genDecorations(BiomeDecorator.java:293)
	at net.minecraft.world.biome.BiomeDecorator.decorateChunk(BiomeDecorator.java:201)
	at net.minecraft.world.biome.BiomeGenBase.decorate(BiomeGenBase.java:458)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:464)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:255)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1182)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:150)
	at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:163)
	at net.minecraft.world.World.getChunkFromChunkCoords(World.java:519)
	at net.minecraft.world.World.getBlock(World.java:424)
	at net.minecraft.block.BlockLiquid.func_149805_n(BlockLiquid.java:555)
	at net.minecraft.block.BlockLiquid.onNeighborBlockChange(BlockLiquid.java:539)
	at net.minecraft.block.BlockStaticLiquid.onNeighborBlockChange(BlockStaticLiquid.java:29)
	at net.minecraft.world.World.notifyBlockOfNeighborChange(World.java:803)
	at net.minecraft.world.World.notifyBlocksOfNeighborChange(World.java:756)
	at net.minecraft.world.World.notifyBlockChange(World.java:713)
	at net.minecraft.world.World.setBlock(World.java:563)
	at net.minecraft.world.World.setBlock(World.java:697)
	at com.Einhaender.EinMod.SkyblockGenerator.destroyChunk(SkyblockGenerator.java:66)
	at com.Einhaender.EinMod.SkyblockGenerator.generateOverworld(SkyblockGenerator.java:44)
	at com.Einhaender.EinMod.SkyblockGenerator.generate(SkyblockGenerator.java:26)
	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:102)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:256)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1182)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:150)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:353)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:81)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:98)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:488)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)


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

-- Head --
Stacktrace:
	at java.util.Random.nextInt(Random.java:265)
	at net.minecraft.world.biome.BiomeDecorator.genDecorations(BiomeDecorator.java:293)
	at net.minecraft.world.biome.BiomeDecorator.decorateChunk(BiomeDecorator.java:201)
	at net.minecraft.world.biome.BiomeGenBase.decorate(BiomeGenBase.java:458)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:464)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:255)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1182)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:150)
	at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:163)
	at net.minecraft.world.World.getChunkFromChunkCoords(World.java:519)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (0,2,32), Chunk: (at 0,0,0 in 0,2; contains blocks 0,0,32 to 15,255,47), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
	at net.minecraft.world.World.getBlock(World.java:424)
	at net.minecraft.block.BlockLiquid.func_149805_n(BlockLiquid.java:555)
	at net.minecraft.block.BlockLiquid.onNeighborBlockChange(BlockLiquid.java:539)
	at net.minecraft.block.BlockStaticLiquid.onNeighborBlockChange(BlockStaticLiquid.java:29)

-- Block being updated --
Details:
	Source block type: ID #10 (tile.lava // net.minecraft.block.BlockDynamicLiquid)
	Block type: ID #11 (tile.lava // net.minecraft.block.BlockStaticLiquid)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (0,2,31), Chunk: (at 0,0,15 in 0,1; contains blocks 0,0,16 to 15,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
	at net.minecraft.world.World.notifyBlockOfNeighborChange(World.java:803)
	at net.minecraft.world.World.notifyBlocksOfNeighborChange(World.java:756)
	at net.minecraft.world.World.notifyBlockChange(World.java:713)
	at net.minecraft.world.World.setBlock(World.java:563)
	at net.minecraft.world.World.setBlock(World.java:697)
	at com.Einhaender.EinMod.SkyblockGenerator.destroyChunk(SkyblockGenerator.java:66)
	at com.Einhaender.EinMod.SkyblockGenerator.generateOverworld(SkyblockGenerator.java:44)
	at com.Einhaender.EinMod.SkyblockGenerator.generate(SkyblockGenerator.java:26)
	at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:102)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:256)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1182)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:150)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:353)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:81)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:98)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:488)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:787)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Linux (amd64) version 2.6.32-57-generic
	Java Version: 1.6.0_30, Sun Microsystems Inc.
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 60422384 bytes (57 MB) / 130285568 bytes (124 MB) up to 877854720 bytes (837 MB)
	JVM Flags: 0 total; 
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP v9.01-pre FML v7.2.116.1024 Minecraft Forge 10.12.0.1024 4 mods loaded, 4 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	FML{7.2.116.1024} [Forge Mod Loader] (forgeSrc-1.7.2-10.12.0.1024.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	Forge{10.12.0.1024} [Minecraft Forge] (forgeSrc-1.7.2-10.12.0.1024.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	EinMod{0.1} [Ein Mod] (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'