12:32:42 [SEVERE] Could not pass event PlayerJoinEvent to NoLaggChunks
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:324)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.ServerConfigurationManagerAbstract.c(ServerConfigurationManagerAbstract.java:161)
	at net.minecraft.server.ServerConfigurationManagerAbstract.a(ServerConfigurationManagerAbstract.java:92)
	at net.minecraft.server.NetLoginHandler.d(NetLoginHandler.java:121)
	at net.minecraft.server.NetLoginHandler.c(NetLoginHandler.java:41)
	at net.minecraft.server.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:44)
	at net.minecraft.server.DedicatedServerConnection.b(SourceFile:29)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:583)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.NoSuchFieldError: networkManager
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.enforceBufferFullSize(ChunkSendQueue.java:93)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.<init>(ChunkSendQueue.java:143)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.bind(ChunkSendQueue.java:130)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.bind(ChunkSendQueue.java:126)
	at com.bergerkiller.bukkit.nolagg.chunks.NLCListener.onPlayerJoin(NLCListener.java:13)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:322)
	... 14 more
12:32:44 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
12:32:44 [WARNING] Task of 'NoLaggChunks' generated an exception
java.lang.NoSuchFieldError: networkManager
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.enforceBufferFullSize(ChunkSendQueue.java:93)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.<init>(ChunkSendQueue.java:143)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.bind(ChunkSendQueue.java:130)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue$1$1.handle(ChunkSendQueue.java:62)
	at com.bergerkiller.bukkit.common.Operation.doPlayers(Operation.java:57)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue$1$1.run(ChunkSendQueue.java:59)
	at com.bergerkiller.bukkit.common.Operation.<init>(Operation.java:27)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue$1$1.<init>(ChunkSendQueue.java:57)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue$1.run(ChunkSendQueue.java:57)
	at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:126)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:512)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)