org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:341)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:462)
        at net.minecraft.server.ItemInWorldManager.breakBlock(ItemInWorldManager
.java:282)
        at net.minecraft.server.ItemInWorldManager.a(ItemInWorldManager.java:209
)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:558)
        at net.minecraft.server.Packet14BlockDig.handle(SourceFile:46)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:290)
        at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:113)
        at net.minecraft.server.ServerConnection.b(SourceFile:39)
        at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
        at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:595)
        at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
        at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.NullPointerException
        at com.gmail.nossr50.skills.gathering.WoodCutting.woodCuttingProcCheck(W
oodCutting.java:337)
        at com.gmail.nossr50.skills.gathering.WoodCutting.removeBlocks(WoodCutti
ng.java:171)
        at com.gmail.nossr50.skills.gathering.WoodCutting.treeFeller(WoodCutting
.java:49)
        at com.gmail.nossr50.listeners.BlockListener.onBlockBreak(BlockListener.
java:214)
        at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:339)