2013-04-02 17:44:20 [SEVERE] Could not pass event TransactionEvent to ChestShop v3.46
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:26)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464)
	at com.Acrobot.ChestShop.ChestShop.callEvent(ChestShop.java:237)
	at com.Acrobot.ChestShop.Shop.Shop.buy(Shop.java:122)
	at com.Acrobot.ChestShop.Shop.Shop.sellToPlayer(Shop.java:59)
	at com.Acrobot.ChestShop.Listeners.Player.PlayerInteract.onPlayerInteract(PlayerInteract.java:121)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.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.java:425)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:26)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464)
	at org.bukkit.craftbukkit.v1_5_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:181)
	at net.minecraft.server.v1_5_R2.PlayerInteractManager.interact(PlayerInteractManager.java:381)
	at net.minecraft.server.v1_5_R2.PlayerConnection.a(PlayerConnection.java:635)
	at net.minecraft.server.v1_5_R2.Packet15Place.handle(SourceFile:58)
	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:174)
	at net.minecraft.server.v1_5_R2.PlayerConnection.d(PlayerConnection.java:113)
	at net.minecraft.server.v1_5_R2.ServerConnection.b(SourceFile:35)
	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:66)
	at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:582)
	at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:229)
	at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:471)
	at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:403)
	at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
	at java.lang.String.replace(Unknown Source)
	at com.Acrobot.ChestShop.Listeners.Transaction.TransactionMessageSender.formatMessage(TransactionMessageSender.java:90)
	at com.Acrobot.ChestShop.Listeners.Transaction.TransactionMessageSender.sendBuyMessage(TransactionMessageSender.java:41)
	at com.Acrobot.ChestShop.Listeners.Transaction.TransactionMessageSender.onTransaction(TransactionMessageSender.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.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.java:425)
	... 30 more