ucerrro2

Could not pass event InventoryClickEvent to UltraCosmetics v2.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1844) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:33) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.PacketPlayInWindowClick.a(SourceFile:10) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_73]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_73]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_73]
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_8_R3/inventory/CraftInventory
	at be.isach.ultracosmetics.cosmetics.gadgets.Gadget$GadgetListener.isSameInventory(Gadget.java:393) ~[?:?]
	at be.isach.ultracosmetics.cosmetics.gadgets.Gadget$GadgetListener.onInventoryClickAmmo(Gadget.java:361) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_73]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_73]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.9.jar:git-Spigot-6f291ea-55a8535]
	... 15 more