Group Manager Plugin Problem?!

So i try typing /manuadd [player] [group] and it tells me that "An internal error has occured while attempting to perform this command"

And all of the ranks of people on my server has been cleared?
Any ideas on how to fix this?
Here is my groups.yml

# Group inheritance
# any inherited groups prefixed with a g: are global groups
# These groups are defined in the globalgroups.yml
# and can be inherited in any worlds groups/users.yml.
#
# Groups without the g: prefix are groups local to this world
# and defined in the this groups.yml file.

groups:
VIP:
default: false
permissions: []
inheritance:
- vetran
info:
prefix: '&0[&5VIP&0]&5'
build: true
suffix: '&3'
Owner:
default: false
permissions:
- '*'
inheritance: []
info:
prefix: '&0{&4&kk&0}&6Owner&0{&4&kk&0}&6'
build: true
suffix: '&4'
StaffManager:
default: false
permissions:
- '*'
inheritance: []
info:
prefix: '&0{&a&kk&0}&9StaffManager&0{&a&kk&0}&9'
build: true
suffix: '&b'
torch:
default: false
permissions:
- essentials.sethome.multiple
- essentials.signs.break.disposal
- essentials.signs.break.mail
- essentials.signs.break.protection
- essentials.signs.break.trade
- essentials.signs.create.disposal
- essentials.signs.create.mail
- essentials.signs.create.protection
- essentials.signs.create.trade
- essentials.suicide
inheritance:
- hardend
info:
prefix: '&e[&6Torch&e]'
build: true
suffix: '&6'
Mod:
default: false
permissions:
- essentials.ext
- essentials.fly
- essentials.getpos
- essentials.helpop.recieve
- essentials.home.others
- essentials.invsee
- essentials.kick.notify
- essentials.kill
- essentials.kit.*
- essentials.mute
inheritance:
- tmod
info:
prefix: '&0[&bMod&0]&b'
build: true
suffix: '&3'
Architect:
default: false
permissions:
- essentials.signs.create.disposal
- essentials.time
inheritance:
- builder
info:
prefix: '&3[Architect]'
build: true
suffix: '&f'
Rainbowz:
default: false
permissions: []
inheritance: []
info:
prefix: '&1[&2R&3a&4i&5n&6b&7o&8w&9z&0]&e'
build: true
suffix: '&b'
TMod:
default: false
permissions:
- bukkit.command.kick
- essentials.depth
- essentials.getpos
- essentials.home
- essentials.ignore
- essentials.itemdb
- essentials.ptime
- essentials.ptime.others
- essentials.signs.break.*
- essentials.signs.create.*
- essentials.togglejail
inheritance:
- vetran
info:
prefix: '[&2Trail-Mod&0]'
build: true
suffix: '&2'
SMod:
default: false
permissions:
- bukkit.command.ban
- bukkit.command.ban.player
- bukkit.command.gamemode
- essentials.gamemode
- essentials.nick.color
- essentials.nick.others
- essentials.realname
- essentials.seen.banreason
- essentials.setwarp
- essentials.tempban
- essentials.tempban.exempt
- essentials.tempban.offline
- essentials.tp
- essentials.tp.others
- essentials.tphere
- essentials.tppos
- essentials.tptoggle
inheritance:
- mod
info:
prefix: '&0[&3Super-Mod&0]&3'
build: true
suffix: '&3'
New:
default: true
permissions:
- essentials.balance
- essentials.balance.others
- essentials.balancetop
- essentials.chat.url
- essentials.help
- essentials.helpop
- essentials.home
- essentials.kit
- essentials.kit.tools
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.me
- essentials.motd
- essentials.msg
- essentials.pay
- essentials.rules
- essentials.spawn
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.list
- essentials.worth
inheritance: []
info:
prefix: '&8[&fNew&8]&f'
build: true
suffix: '&f'
CoOwner:
default: false
permissions:
- '*'
inheritance: []
info:
prefix: '&0{&4&kk&0}&6Co-Owner&0{&4&kk&0}&6'
build: true
suffix: '&4'
OP:
default: false
permissions:
- bukkit.command.say
- bukkit.command.stop
- bukkit.command.teleport
- bukkit.command.tell
- bukkit.command.time
- bukkit.command.time.add
- bukkit.command.time.set
- bukkit.command.version
- bukkit.command.whitelist
- bukkit.command.whitelist.add
- bukkit.command.whitelist.disable
- bukkit.command.whitelist.enable
- bukkit.command.whitelist.list
- bukkit.command.whitelist.reload
- bukkit.command.whitelist.remove
- essentials.weather
inheritance:
- sadmin
info:
prefix: '&0{&3&kk&0}&eOP&0{&3&kk&0}&e'
build: false
suffix: '&3'
Admin:
default: false
permissions:
- bukkit.command.ban.ip
- bukkit.command.unban
- bukkit.command.unban.ip
- bukkit.command.unban.player
- essentials.clearinventory
- essentials.clearinventory.others
inheritance:
- smod
info:
prefix: '&0[&cAdmin&0]'
build: true
suffix: '&c'
Trusted:
default: false
permissions:
- essentials.msg.color
- essentials.msg.format
inheritance:
- new
info:
prefix: '&5[Trusted]&e'
build: true
suffix: ''
Sadmin:
default: false
permissions:
- bukkit.broadcast
- bukkit.broadcast.admin
- bukkit.command.give
- bukkit.command.kill
- bukkit.command.me
- bukkit.command.time
- bukkit.command.time.add
- bukkit.command.time.set
- bukkit.command.whitelist.add
- essentials.enchant
- essentials.enchant.[enchantmentname
- essentials.enchant.[enchantmentname]
- essentials.powertool
- essentials.powertooltoggle
- essentials.protect
- essentials.repair
- essentials.repair.armor
- essentials.repair.enchanted
- essentials.unlimited.item-[itemid]
- essentials.unlimited.item-[itemname]
- essentials.unlimited.item-all
- essentials.unlimited.item-bucket
- worldedit*
- worldedit.analysis.count
- worldedit.analysis.distr
- worldedit.brush.clipboard
- worldedit.brush.cylinder
- worldedit.brush.option.mask
- worldedit.brush.options.size
- worldedit.brush.smooth
- worldedit.brush.sphere
- worldedit.chunkinfo
- worldedit.clipboard.clear
- worldedit.clipboard.copy
- worldedit.clipboard.cut
- worldedit.clipboard.flip
- worldedit.clipboard.load
- worldedit.clipboard.paste
- worldedit.clipboard.rotate
- worldedit.clipboard.save
- worldedit.delchunks
- worldedit.fast
- worldedit.generation.cylinder
- worldedit.generation.forest
- worldedit.generation.pumpkins
- worldedit.generation.pyramid
- worldedit.generation.shape
- worldedit.gobal-mask
- worldedit.history.clear
- worldedit.history.redo
- worldedit.history.undo
- worldedit.limit
- worldedit.listchunks
- worldedit.naigation.unstuck
- worldedit.navigation.ascend
- worldedit.navigation.ceiling
- worldedit.navigation.descend
- worldedit.navigation.jumpto
- worldedit.navigation.thru
- worldedit.navigation.up
- worldedit.regen
- worldedit.region.deform
- worldedit.region.faces
- worldedit.region.move
- worldedit.region.naturalize
- worldedit.region.overlay
- worldedit.region.replace
- worldedit.region.set
- worldedit.region.smooth
- worldedit.region.stack
- worldedit.region.walls
- worldedit.reload
- worldedit.scripting.execute
- worldedit.selection.chunk
- worldedit.selection.contract
- worldedit.selection.expand
- worldedit.selection.hpos
- worldedit.selection.inset
- worldedit.selection.outset
- worldedit.selection.pos
- worldedit.selection.shift
- worldedit.selection.size
- worldedit.snapshots.list
- worldedit.snapshots.restore
- worldedit.sphere
- worldedit.superpickaxe
- worldedit.superpickaxe.recursive
- worldedit.tool.data-cycler
- worldedit.tool.flood-fill
- worldedit.tool.replacer
- worldedit.tool.tree
- worldedit.wand
inheritance:
- admin
info:
prefix: '&0[&4Super-Admin&0]&2'
build: true
suffix: '&4'
Vetran:
default: false
permissions:
- essentials.sethome.multiple
- essentials.signs.use.*
inheritance:
- hardend
info:
prefix: '&8[&5Vetran&8]'
build: true
suffix: '&8'
SOP:
default: false
permissions:
- '*'
inheritance: []
info:
prefix: '&0{&3&kk&0}&eSuper&3OP&0{&3&kk&0}&e'
build: true
suffix: '&3'
Hardend:
default: false
permissions:
- essentials.back
- groupmanager.listgroups
inheritance:
- architect
info:
prefix: '&8[&9Hardend&8]&3'
build: true
suffix: '&9'
Builder:
default: false
permissions:
- essentials.afk
- essentials.back.ondeath
inheritance:
- trusted
info:
prefix: '&9[Builder]'
build: true
suffix: '&3'
Gold:
default: false
permissions:
- bukkit.command.gamemode
inheritance:
- iron
info:
prefix: '&e[&6Gold&e]'
build: true
suffix: '&6'
Diamond:
default: false
permissions:
- Worldedit
inheritance:
- gold
info:
prefix: '&3[&bDiamond&3]'
build: true
suffix: '&b'
Iron:
default: false
permissions:
- essentials.fly
- essentials.heal
inheritance:
- vip
info:
prefix: '&8[&7Iron&8]&8'
build: true
suffix: '&7'