2012-11-16 15:59:52 [SEVERE] Could not pass event SignChangeEvent to ChestShop v3.46
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1331)
	at net.minecraft.server.Packet130UpdateSign.handle(SourceFile:46)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:290)
	at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:112)
	at net.minecraft.server.ServerConnection.b(SourceFile:39)
	at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:595)
	at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.NullPointerException
	at com.Acrobot.Breeze.Utils.MaterialUtil$DataValue.name(MaterialUtil.java:384)
	at com.Acrobot.Breeze.Utils.MaterialUtil.getName(MaterialUtil.java:100)
	at com.Acrobot.ChestShop.Listeners.Block.SignChange.formatItemLine(SignChange.java:166)
	at com.Acrobot.ChestShop.Listeners.Block.SignChange.onSignChange(SignChange.java:69)
	at sun.reflect.GeneratedMethodAccessor281.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
	... 14 more