member being able to place but error message pops up. need help

when one of my members places a block a message pops up saying they dont have permission to place that block but the block is still placed. i dont understand what plugin is causing this.
im using CB 617
below is a list of my plugins:
bColourChat
CommandSigns
Craftbook
essentials
iChat
iConomy
Lockette
milkadmin
MultiVerse
Permissions (2.5.5)
Plgessentials
Worldedit
below is my permission setup for members:
Member:
default: false
info:
prefix: ''
suffix: ''
build: true
inheritance:
permissions:
- 'iConomy.payment'
- 'iConomy.rank'
- 'iConomy.list'
- 'iConomyChestShop.shop.create'
- 'iConomyChestShop.shop.use'
- 'iConomyChestShop.shop.sell'
- 'essentials.help'
- 'essentials.tp'
- 'essentials.rules'
- 'essentials.list'
- 'essentials.spawn'
- 'essentials.motd'
- 'essentials.warp'
- 'essentials.back'
- 'multiverse.tp'
- 'multiverse.list'
If someone could please help me with my problem i would highly appreciate it!

never mind i figured out that it was a craftbook permission node

EDIT by Moderator: merged posts, please use the edit button instead of double posting.