Thread:HubToo/@comment-25359794-20151017123609/@comment-25612015-20151017152422

From the FAQ: "by default players will have none of these permissions unless they are opped".

I advise you to give ALL of the permissions to everyone and see if it changes the situation.

If yes, start over working the permissions one by one (customnpcs.global.dialog would be my guess).

If no, try first to remove WorldGuard to be sure that it is the origin of the problem.