Whats The Problem (URGENT)

2013-10-22 09-30
=============================== GM ERROR LOG ===============================
= ERROR REPORT START - 2.0 (2.12.1) (Phoenix) =

java.lang.IllegalArgumentException: There was no Default Group declared in file: plugins/GroupManager/worlds/world/groups.yml
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadGroups(WorldDataHolder.java:704)
at org.anjocaido.groupmanager.dataholder.WorldDataHolder.loadGroups(WorldDataHolder.java:416)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:678)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.loadWorld(WorldsHolder.java:640)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialWorldLoading(WorldsHolder.java:110)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.initialLoad(WorldsHolder.java:100)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.resetWorldsHolder(WorldsHolder.java:92)
at org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder.<init>(WorldsHolder.java:59)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:169)
at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:93)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
at org.bukkit.craftbukkit.v1_6_R3.CraftServer.loadPlugin(CraftServer.java:282)
at org.bukkit.craftbukkit.v1_6_R3.CraftServer.enablePlugins(CraftServer.java:264)
at net.minecraft.server.v1_6_R3.MinecraftServer.l(MinecraftServer.java:315)
at net.minecraft.server.v1_6_R3.MinecraftServer.f(MinecraftServer.java:292)
at net.minecraft.server.v1_6_R3.MinecraftServer.a(MinecraftServer.java:252)
at net.minecraft.server.v1_6_R3.DedicatedServer.init(DedicatedServer.java:152)
at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:393)
at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)

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Perhaps this is the problem? Although without seeing the file itself, I couldn't say for sure.

 

http://pastebin.com/aiDFwQtz

 

Responded at https://essentials3.atlassian.net/browse/ESS-4861?jql=