Bukkit

This occurs when placing an item onto a "Showcase" block.

2011-11-28 11:50:09 [INFO] null line -1
2011-11-28 11:50:09 [INFO] null line -1
2011-11-28 11:50:09 [INFO] null line -2
2011-11-28 11:50:09 [INFO] null line -1
2011-11-28 11:50:09 [INFO] PluginClassLoader.java line 36
2011-11-28 11:50:09 [INFO] PluginClassLoader.java line 24
2011-11-28 11:50:09 [INFO] null line -1
2011-11-28 11:50:09 [INFO] null line -1
2011-11-28 11:50:09 [INFO] NarrowtuxLib.java line 301
2011-11-28 11:50:09 [INFO] ShowcaseCreationAssistant.java line 43
2011-11-28 11:50:09 [INFO] ShowcasePlayerListener.java line 68
2011-11-28 11:50:09 [INFO] JavaPluginLoader.java line 330
2011-11-28 11:50:09 [INFO] RegisteredListener.java line 58
2011-11-28 11:50:09 [INFO] SimplePluginManager.java line 339
2011-11-28 11:50:09 [INFO] CraftEventFactory.java line 171
2011-11-28 11:50:09 [INFO] ItemInWorldManager.java line 265
2011-11-28 11:50:09 [INFO] NetServerHandler.java line 592
2011-11-28 11:50:09 [INFO] SourceFile line 57
2011-11-28 11:50:09 [INFO] NetworkManager.java line 226
2011-11-28 11:50:09 [INFO] NetServerHandler.java line 92
2011-11-28 11:50:09 [INFO] SpoutNetServerHandler.java line 501
2011-11-28 11:50:09 [INFO] SourceFile line 108
2011-11-28 11:50:09 [INFO] MinecraftServer.java line 471
2011-11-28 11:50:09 [INFO] MinecraftServer.java line 374
2011-11-28 11:50:09 [INFO] SourceFile line 417
2011-11-28 11:50:09 [SEVERE] Could not pass event PLAYER_INTERACT to Showcase
java.lang.NullPointerException
    at com.narrowtux.showcase.ShowcasePlayerListener.onPlayerInteract(ShowcasePlayerListener.java:71)
    at org.bukkit.plugin.java.JavaPluginLoader$11.execute(JavaPluginLoader.java:330)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:339)
    at org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:171)
    at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:265)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:592)
    at net.minecraft.server.Packet15Place.a(SourceFile:57)
    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:501)
    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)