2012-03-30 23:40:37 [WARNING] Task of 'GiantCaves' generated an exception
java.lang.NullPointerException
	at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:34)
	at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:3)
	at java.util.TreeMap.cmp(TreeMap.java:1911)
	at java.util.TreeMap.put(TreeMap.java:1990)
	at java.util.TreeSet.add(Unknown Source)
	at net.minecraft.server.World.c(World.java:1076)
	at net.minecraft.server.BlockSand.onPlace(BlockSand.java:14)
	at net.minecraft.server.Chunk.a(Chunk.java:407)
	at net.minecraft.server.Chunk.a(Chunk.java:347)
	at net.minecraft.server.World.setRawTypeId(World.java:365)
	at net.minecraft.server.World.setTypeId(World.java:434)
	at org.bukkit.craftbukkit.block.CraftBlock.setTypeId(CraftBlock.java:92)
	at org.bukkit.craftbukkit.block.CraftBlock.setType(CraftBlock.java:88)
	at com.ryanmichela.giantcaves.GiantCavePopulator$1.run(GiantCavePopulator.java:134)
	at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:126)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:520)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)
2012-03-30 23:40:37 [SEVERE] [OFC] null
2012-03-30 23:40:37 [SEVERE] java.lang.NullPointerException
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:34)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:3)
2012-03-30 23:40:37 [SEVERE] 	at java.util.TreeMap.cmp(TreeMap.java:1911)
2012-03-30 23:40:37 [SEVERE] 	at java.util.TreeMap.put(TreeMap.java:1990)
2012-03-30 23:40:37 [SEVERE] 	at java.util.TreeSet.add(Unknown Source)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.World.c(World.java:1076)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BlockSand.onPlace(BlockSand.java:14)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.Chunk.a(Chunk.java:407)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.Chunk.a(Chunk.java:347)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.World.setRawTypeId(World.java:365)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.WorldGenMinable.a(SourceFile:57)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BiomeDecorator.a(SourceFile:236)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BiomeDecorator.b(SourceFile:251)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BiomeDecorator.a(SourceFile:68)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BiomeDecorator.a(SourceFile:27)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.BiomeBase.a(SourceFile:215)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.ChunkProviderGenerate.getChunkAt(SourceFile:454)
2012-03-30 23:40:37 [SEVERE] 	at org.bukkit.craftbukkit.generator.NormalChunkGenerator.getChunkAt(NormalChunkGenerator.java:49)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:176)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.Chunk.a(Chunk.java:783)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:107)
2012-03-30 23:40:37 [SEVERE] 	at org.bukkit.craftbukkit.CraftWorld.getChunkAt(CraftWorld.java:115)
2012-03-30 23:40:37 [SEVERE] 	at org.bukkit.craftbukkit.CraftWorld.getBlockAt(CraftWorld.java:79)
2012-03-30 23:40:37 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.GetAjacentBlocks(Calculations.java:90)
2012-03-30 23:40:37 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.GetAjacentBlocks(Calculations.java:87)
2012-03-30 23:40:37 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.UpdateBlocksNearby(Calculations.java:55)
2012-03-30 23:40:37 [SEVERE] 	at lishid.orebfuscator.threading.OrebfuscatorThreadUpdate.run(OrebfuscatorThreadUpdate.java:80)
2012-03-30 23:40:37 [SEVERE] java.lang.IllegalStateException: TickNextTick list out of synch
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.World.a(World.java:2378)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.World.doTick(World.java:1753)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:541)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
2012-03-30 23:40:37 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)
2012-03-30 23:40:37 [SEVERE] Unexpected exception
java.lang.IllegalStateException: TickNextTick list out of synch
	at net.minecraft.server.World.a(World.java:2378)
	at net.minecraft.server.World.doTick(World.java:1753)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:541)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)