2012-12-23 15:36:32 [SEVERE] Could not pass event PlayerInteractEvent to TreasureChest v8.3.7
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:178)
	at net.minecraft.server.v1_4_6.PlayerInteractManager.interact(PlayerInteractManager.java:376)
	at net.minecraft.server.v1_4_6.PlayerConnection.a(PlayerConnection.java:657)
	at net.minecraft.server.v1_4_6.Packet15Place.handle(SourceFile:58)
	at net.minecraft.server.v1_4_6.NetworkManager.b(NetworkManager.java:290)
	at net.minecraft.server.v1_4_6.PlayerConnection.d(PlayerConnection.java:112)
	at net.minecraft.server.v1_4_6.ServerConnection.b(SourceFile:39)
	at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:598)
	at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
	at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
	at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
	at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/inventory/CraftItemStack
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
	at java.lang.Class.getDeclaredMethod(Unknown Source)
	at org.bukkit.configuration.serialization.ConfigurationSerialization.getMethod(ConfigurationSerialization.java:44)
	at org.bukkit.configuration.serialization.ConfigurationSerialization.deserialize(ConfigurationSerialization.java:110)
	at org.bukkit.configuration.serialization.ConfigurationSerialization.deserializeObject(ConfigurationSerialization.java:187)
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:35)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:326)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:143)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:307)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:459)
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:26)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:326)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:143)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:307)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:459)
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:26)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:326)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:143)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:307)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:459)
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:26)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:326)
	at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:143)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:307)
	at org.yaml.snakeyaml.constructor.SafeConstructor$ConstructYamlMap.construct(SafeConstructor.java:459)
	at org.bukkit.configuration.file.YamlConstructor$ConstructCustomObject.construct(YamlConstructor.java:26)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:183)
	at org.yaml.snakeyaml.constructor.BaseConstructor.constructDocument(BaseConstructor.java:142)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:128)
	at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:480)
	at org.yaml.snakeyaml.Yaml.load(Yaml.java:399)
	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:53)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:138)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:105)
	at com.mtihc.minecraft.treasurechest.v8.plugin.util.LocationRepository.getConfig(LocationRepository.java:53)
	at com.mtihc.minecraft.treasurechest.v8.plugin.util.LocationRepository.load(LocationRepository.java:66)
	at com.mtihc.minecraft.treasurechest.v8.core.TreasureChestRepository.load(TreasureChestRepository.java:1)
	at com.mtihc.minecraft.treasurechest.v8.core.TreasureManager.load(TreasureManager.java:128)
	at com.mtihc.minecraft.treasurechest.v8.core.TreasureManager.getTreasureChest(TreasureManager.java:405)
	at com.mtihc.minecraft.treasurechest.v8.core.TreasureManager.onPlayerInteract(TreasureManager.java:214)
	at com.mtihc.minecraft.treasurechest.v8.core.TreasureChestListener.onPlayerInteract(TreasureChestListener.java:29)
	at sun.reflect.GeneratedMethodAccessor67.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)
	... 16 more
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.inventory.CraftItemStack
	at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 66 more