Bukkit

What steps will reproduce the problem?
1. User clicks Bank Open sign
2. User types /bank open 1

What is the expected output? What do you see instead?
Expected - The bank should open
Actual - Bank doesn't open, and error returns, "Error: an internal error occurred. Please notify the administrators."

What version of the product are you using?
Skybank 1.5.3

Do you have an error log of what happened?

2012-09-07 15:21:45 [SEVERE] [Skybank] An exception occured. Please notify the plugin developpers via a BukkitDev ticket.

2012-09-07 15:21:45 [SEVERE] [Skybank] Exception details: Unexpected end of ZLIB input stream

2012-09-07 15:21:45 [SEVERE] [Skybank] java.io.EOFException: Unexpected end of ZLIB input stream

    at java.util.zip.InflaterInputStream.fill(Unknown Source)

    at java.util.zip.InflaterInputStream.read(Unknown Source)

    at java.util.zip.GZIPInputStream.read(Unknown Source)

    at java.io.DataInputStream.read(Unknown Source)

    at Neptuner.Bank.SlotLoader.loadSlot(SlotLoader.java:188)

    at Neptuner.Bank.SlotLoader.openSlot(SlotLoader.java:97)

    at Neptuner.Bank.SlotLoader.openSlot(SlotLoader.java:87)

    at Neptuner.Bank.BankCommand.onCommand(BankCommand.java:80)

    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)

    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168)

    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:492)

    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:878)

    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:825)

    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:807)

    at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:44)

    at net.minecraft.server.NetworkManager.b(NetworkManager.java:276)

    at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:109)

    at net.minecraft.server.ServerConnection.b(SourceFile:35)

    at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)

    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:581)

    at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)

    at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)

    at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)