18:26:23 [SEVERE] Could not pass event CUSTOM_EVENT to CraftGroup
java.lang.IllegalAccessError: tried to access field net.minecraft.server.ItemSta
ck.damage from class de.frozenbrain.CraftGroup.Listener.cgInventoryListener
        at de.frozenbrain.CraftGroup.Listener.cgInventoryListener.onInventoryCli
ck(cgInventoryListener.java:43)
        at org.getspout.spoutapi.event.inventory.InventoryListener.onCustomEvent
(InventoryListener.java:57)
        at org.bukkit.plugin.java.JavaPluginLoader$96.execute(JavaPluginLoader.j
ava:934)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:339)
        at org.getspout.spout.SpoutNetServerHandler.handleInventoryClick(SpoutNe
tServerHandler.java:387)
        at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java
:342)
        at net.minecraft.server.Packet102WindowClick.a(SourceFile:28)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:92)
        at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java
:500)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:471)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
18:26:23 [INFO] Attempted to place a tile entity (net.minecraft.server.TileEntit
yFurnace@7538fe9) at 15,68,15 (DIRT) where there was no entity tile!