Why are you using such a load of if statements?
Can't you use this:
Code:
RAW 430:*: {
  if (Cannot fjoin a bot isin $2-) {
    echo $colour(info2) -ta >Command: FJOIN-BOT is administratively prohibited 
    haltdef | return
  }
  if ($1-5 == Set topic with earlier timestamp) {
   ;(I think this was the intended condition)
    echo $colour(info2) -ta >Command: SET TOPIC WITH EARLIER TIMESTAMP is administratively prohibited.
  }
  else {
    echo $colour(info2) -ta >Command: $2 is administratively prohibited
    haltdef
  }
}