NoLagg Chunk Error

05:36 PM [WARNING] [NoLagg] Task #99 for NoLagg v1.90.6-SNAPSHOT generated an exception
java.lang.NoSuchMethodError: net.minecraft.world.gen.ChunkProviderServer.getChunkAt(IILjava/lang/Runnable;)Lnet/minecraft/world/chunk/Chunk;
	at com.bergerkiller.bukkit.common.utils.ChunkUtil.getChunkAsync(ChunkUtil.java:334)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.sendBatch(ChunkSendQueue.java:362)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.update(ChunkSendQueue.java:312)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.update(ChunkSendQueue.java:290)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue.access$100(ChunkSendQueue.java:32)
	at com.bergerkiller.bukkit.nolagg.chunks.ChunkSendQueue$ChunkSendingTask.run(ChunkSendQueue.java:57)
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71)
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:346)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:862)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:423)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:798)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658)
	at java.lang.Thread.run(Unknown Source)