PERMISSIONS WON'T WORK AND PREFIX WON'T SHOW UP!

For Some Reason When I do Permissons it won't show up and in game the Prefix doesn't show up! Also Please fix this Group Manager config so it can work and please add a group called Builder and make it work


# 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:
Default:
default: true
permissions:
- essentials.back
- essentials.warps
- essentials.warps.list
- essentials.warps.*
- essentials.help
- essentials.msg
- plotme.use
- plotme.claim
- plotme.info
- plotme.clear
- plotme.dispose
- plotme.home
- plotme.limit.2
- plotme.auto
- multiverse.bypass.gamemode.*
inheritance:
- g:groupmanager_default
- g:bukkit_default
- g:essentials_default
- g:towny_default
info:
prefix: '&e[Member]'
build: false
suffix: ''
Owner:
default: false
permissions:
- -vanish.*
- '*'
inheritance:
- admin
info:
prefix: §b[§3§l§kD§4§lOwner§3§l§kD§b]
build: true
suffix: ''
HeadDev:
default: false
permissions: []
inheritance:
- owner
info:
prefix: ''
build: false
suffix: ''
Builder:
default: false
permissions: []
inheritance:
- default
- g:essentials_builder
- g:towny_builder
info:
prefix: '&2'
build: true
suffix: ''
Moderator:
default: false
permissions: []
inheritance:
- builder
- g:groupmanager_moderator
- g:bukkit_moderator
- g:essentials_moderator
- g:towny_moderator
- g:vanish_moderator
info:
prefix: '&5'
build: true
suffix: ''
Admin:
default: false
permissions:
- worldedit.*
inheritance:
- moderator
- g:groupmanager_admin
- g:bukkit_admin
- g:essentials_admin
- g:towny_admin
- g:vanish_admin
info:
prefix: '&c'
build: true
suffix: ''