Different tour, but speaking of mistakes, I think the first date of 2009 (3rd leg of Somewhere Back In Time Tour) Belgrade, Serbia is one of kind later career show:
-Adrian starts 2 Minutes To Midnight instead of Wrathchild, the band carries on.
-Nicko randomly counts The Trooper in (21:10). Band reactions are hillarious. Then he proceeds to mess up Phantom Of The Opera at 22:20.
-And my favourite, Adrian starts playing Wasted Years instead of Trooper. Bruce tells him to get his eyes ****ing checked (28:45).
-after Hallowed Be Thy Name, Bruce thinks it's the end of the show. He says goodnight, see you later, while the band just stands there like, WTF is he doing?
After he gave so much **** to Nicko and Adrian during the show, he ****ed up in the end too.
Hallowed Be Thy Name was the last song of the set on the previous years leg of the tour, that's why Bruce must have thought that it was the last song of the evening.