2011-06-16 13:32:16 [SEVERE] net.minecraft.server.MinecraftException: Failed to check session lock, aborting
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.PlayerNBTManager.b(SourceFile:76)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.World.k(World.java:2128)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.a(SourceFile:54)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.ChunkProviderServer.saveChunk(ChunkProviderServer.java:163)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:242)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.World.doTick(World.java:1599)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:389)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
2011-06-16 13:32:16 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Scavenger.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Scavenger.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Forgery.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Forgery.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Dexterity.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Dexterity.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Combat.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Combat.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Excavation.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Excavation.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Explosives.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Explosives.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/WoodCutting.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/WoodCutting.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Mining.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Mining.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error getting value from file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Range.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] [LC] Error writing user to file.
2011-06-16 13:32:17 [SEVERE] [LC]java.io.FileNotFoundException: plugins/LevelCraftCore/Data/Range.exp (Too many open files)
2011-06-16 13:32:17 [SEVERE] net.minecraft.server.MinecraftException: Failed to check session lock, aborting
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.PlayerNBTManager.b(SourceFile:76)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.World.k(World.java:2128)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.World.w(World.java:189)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.World.save(World.java:179)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.World.doTick(World.java:1612)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:389)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
2011-06-16 13:32:17 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-06-16 13:32:17 [SEVERE] Unexpected exception
net.minecraft.server.MinecraftException: Failed to check session lock, aborting
	at net.minecraft.server.PlayerNBTManager.b(SourceFile:76)
	at net.minecraft.server.World.k(World.java:2128)
	at net.minecraft.server.World.w(World.java:189)
	at net.minecraft.server.World.save(World.java:179)
	at net.minecraft.server.World.doTick(World.java:1612)
	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:389)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)