My Essentials Problems

The error I get in the logs:
(Dev2.10.43) (Phoenix) is disabled!
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - ===================================================
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - = ERROR REPORT START - 2.0 (Dev2.10.43) (Phoenix) =
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - ===================================================
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - === PLEASE COPY AND PASTE THE ERROR.LOG FROM THE ==
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - = GROUPMANAGER FOLDER TO AN ESSENTIALS  DEVELOPER =
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - ===================================================
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - null
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - ===================================================
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - = ERROR REPORT ENDED =
2013-02-09 19:35:59 [SEVERE] GroupManager - SEVERE - ===================================================
2013-02-09 19:35:59 [WARNING] Unexpected exception while parsing console command "manload"
org.bukkit.command.CommandException: Unhandled exception executing command 'manload' in plugin GroupManager v2.0 (Dev2.10.43) (Phoenix)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchCommand(CraftServer.java:514)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchServerCommand(CraftServer.java:506)
	at net.minecraft.server.v1_4_R1.DedicatedServer.al(DedicatedServer.java:260)
	at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:225)
	at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
	at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
	at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.IllegalArgumentException
	at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:238)
	at org.anjocaido.groupmanager.GroupManager.onCommand(GroupManager.java:1720)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	... 8 more
Caused by: java.lang.NullPointerException
	at org.anjocaido.groupmanager.GroupManager.onEnable(GroupManager.java:171)
	... 10 more


My groupmanager file:

# Group inheritance
#
# Any inherited groups prefixed with a g: are global groups
# and are inherited from the GlobalGroups.yml.
#
# Groups without the g: prefix are groups local to this world
# and are defined in the this groups.yml file.
#
# Local group inheritances define your promotion tree when using 'manpromote/mandemote'

groups:
  Visitor:
    default: true
    permissions:
    - bukkit.command.kill
	- afk
	- back
	- day
	- extinguish
	- feed
	- gamemode
	- fly
	- fullheal
	- gm
	- home
	- sethome
	- item
	- ip
	- jcommands
	- night
	- ping
	- spawn
	- suicide
	- sun
    inheritance:
    - g:groupmanager_default
    - g:bukkit_default
    - g:essentials_default
    - g:towny_default
    info:
      prefix: '&e'
      build: false
      suffix: ''
  Tester:
    default: false
    permissions:
	- afk
	- back
	- banned
	- day
	- disappear
	- extinguish
	- feed
	- fly
	- fullheal
	- gm
	- heal
	- home
	- ip
	- item
	- jcommands
	- kill
	- location
	- night
	- ping
	- put
	- ram
	- reappear
	- serverwebsite
	- sethome
	- smite
	- spawn
	- spawnmob
	- starve
	- storm
	- suicide
	- sun
	- thunder
	- dis
    inheritance:
    - default
    - g:essentials_builder
    - g:towny_builder
    info:
      prefix: '&2'
      build: true
      suffix: ''
  Builder:
    default: false
    permissions:
	- jcommands.*
	- '*'
	- dis
    inheritance:
    - builder
    - g:groupmanager_moderator
    - g:bukkit_moderator
    - g:essentials_moderator
    - g:towny_moderator
    - g:vanish_moderator
    info:
      prefix: '&5'
      build: true
      suffix: ''
  Programmer:
    default: false
    permissions:
	- jcommands.*
	- '*'
	- dis
    inheritance:
    - moderator
    - g:groupmanager_admin
    - g:bukkit_admin
    - g:essentials_admin
    - g:towny_admin
    - g:vanish_admin
    info:
      prefix: '&c'
      build: true
      suffix: ''
  Redstone/Planning:
    default: false
    permissions:
	- jcommands.*
    - '*'
    - vanish.*
    inheritance:
    - admin
    info:
      prefix: '&4'
      build: true
      suffix: ''