are you not getting mixed up with pre testing your meter against a known source to make sure it is working before testing for dead voltage,just a thought not a dig btw
usual suspects giving tex a hard time because of their own agenda again,not so long ago Adrian was a hero now he's gone to zero,poor treatment of a man who gives up his own time to help the users of his kit and has went out of his way along with his tech team to resolve problems brought up...imo