Thaumcraft Stack Trace

2013-02-12 05:53:32 [SEVERE] Encountered an unexpected exception t
t: Ticking entity
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:686)
	at ho.r(DedicatedServer.java:270)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
	at fy.run(SourceFile:849)
Caused by: java.lang.NullPointerException
	at org.bukkit.craftbukkit.CraftChunk.getWorld(CraftChunk.java:66)
	at org.bukkit.event.world.ChunkEvent.<init>(ChunkEvent.java:12)
	at org.bukkit.event.world.ChunkLoadEvent.<init>(ChunkLoadEvent.java:14)
	at keepcalm.mods.bukkit.forgeHandler.ForgeEventHandler.chunkLoadEvent(ForgeEventHandler.java:488)
	at net.minecraftforge.event.ASMEventHandler_112_ForgeEventHandler_chunkLoadEvent_Load.invoke(.dynamic)
	at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35)
	at net.minecraftforge.event.EventBus.post(EventBus.java:103)
	at zz.c(Chunk.java:1086)
	at im.c(ChunkProviderServer.java:150)
	at im.d(ChunkProviderServer.java:166)
	at yc.e(World.java:521)
	at ys.<init>(ChunkCache.java:40)
	at thaumcraft.common.entities.ai.TCAI.getEntityPathToXYZ(TCAI.java:42)
	at thaumcraft.common.entities.ai.TCPathNavigate.getPathToXYZ(TCPathNavigate.java:124)
	at thaumcraft.common.entities.ai.TCPathNavigate.tryMoveToXYZ(TCPathNavigate.java:149)
	at thaumcraft.common.entities.ai.AIReturnHome.c(AIReturnHome.java:86)
	at nd.a(SourceFile:91)
	at thaumcraft.common.entities.golems.EntityGolemBase.bl(EntityGolemBase.java:118)
	at md.c(EntityLiving.java:1782)
	at thaumcraft.common.entities.golems.EntityGolemBase.c(EntityGolemBase.java:140)
	at md.j_(EntityLiving.java:843)
	at yc.a(World.java:2291)
	at in.a(WorldServer.java:647)
	at yc.g(World.java:2253)
	at yc.h(World.java:2107)
	at in.h(WorldServer.java:516)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:680)
	... 4 more
2013-02-12 05:53:32 [SEVERE] This crash report has been saved to: /home/minecraft/Minecraft/./crash-reports/crash-2013-02-12_05.53.32-server.txt