2011-06-04 23:27:16 [SEVERE] Could not pass event PLAYER_INTERACT to iConomyChestShop
java.lang.NullPointerException
        at org.bukkit.craftbukkit.block.CraftSign.getLine(CraftSign.java:24)
        at com.Acrobot.iConomyChestShop.iConomyChestShopPlayerListener.onPlayerInteract(iConomyChestShopPlayerListener.java:56)
        at org.bukkit.plugin.java.JavaPluginLoader$9.execute(JavaPluginLoader.java:299)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:310)
        at org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:162)
        at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:209)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:556)
        at net.minecraft.server.Packet15Place.a(SourceFile:57)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:217)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:401)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:311)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)