"on :dialog:QB:init::{
did -b qb 5,6,7,8"
You should remove the 8 or else the "Choose a nick" wont work :)

what are you talking about? $did(8) doesnt even exist in this script... it was an error, there is no ID 8

the fact of using a double warning, is:
if someone has a pm blocker too, it wont accept the query, so it will send a notice, of course ppl can remove it, and just have notice