Bukkit

What steps will reproduce the problem?
1. Unsure, happens after a while running on my server
2.
3.

What is the expected output? What do you see instead?
n/a

What version of the product are you using?
2.1

Do you have an error log of what happened?

2011-10-22 23:04:08 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'sortchest' in plugin InventorySort v2.1.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:163)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:355)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
    at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:92)
    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)
Caused by: java.lang.StackOverflowError
    at org.bukkit.configuration.MemorySection.createPath(MemorySection.java:637)
    at org.bukkit.configuration.MemorySection.createPath(MemorySection.java:622)
    at org.bukkit.configuration.MemorySection.getDefault(MemorySection.java:566)
    at org.bukkit.configuration.MemorySection.get(MemorySection.java:204)
    at org.bukkit.configuration.MemorySection.getDefault(MemorySection.java:566)
    at org.bukkit.configuration.MemorySection.get(MemorySection.java:204)
    at org.bukkit.configuration.MemorySection.getDefault(MemorySection.java:566)
    at org.bukkit.configuration.MemorySection.get(MemorySection.java:204)
    at org.bukkit.configuration.MemorySection.getDefault(MemorySection.java:566)
    at org.bukkit.configuration.MemorySection.get(MemorySection.java:204)
    at org.bukkit.configuration.MemorySection.getDefault(MemorySection.java:566)
    at org.bukkit.configuration.MemorySection.get(MemorySection.java:204)  (this part continues until the person logs out and back in)

Please provide any additional information below.

This is with craftbukkit 1337

Other plugins I currently use are: 2011-10-22 23:25:54 [INFO] Plugins: AutoRepair, BananaBackup, ClayGen, CreeperHeal, Dismantler, EfficiencyExpert, Essentials, FastFood, Glowstone Lanterns, iConomy, InventorySort, MiningTNT, MobBounty, MyWarp, PermissionsEx, PickBoat, PlugMan, PorteCoulissante, RegrowingSheepcoat, RetractableBridge, SecretPassage, Stargate, TKeepGrowing, WeatherRestrictions, Permissions, BookWorm, DeathControl, DynaMark, mcMMO, MobArena, OtherDrops, Register