Please Help: LWC and Craftbook Problems

Hey, It would be greatly appreciated if you could help me with two problems I'm having!

1. When I put LWC on my server, no one can place any blocks. Not even cobble or any other normal blocks. It also shows a message in the chat saying:
"[LWC] Internal Error. Notify An Admin Immediately. LAYER_INTERACT"

2. For Craftbook, I don't want the default players to be able to use or make Craftbook signs. However I cant find the file to edit this so anyone can make the signs. (Only when LWC isn't enabled I remind you)
Also, when a player goes to use a craftbook sign like [LIFT] for example, it says in the chat:
"You don't have permission to use elevators"
But then it lifts them up/down.

It would be greatly appreciated if you could help me out.

Thanks,
Matt

 

1. "Notify An Admin Immediately."
2. Get Permissions