Continuity mistake: In the scene where Bette Davis has lost her shawl there is a shot of her and Maggie Smith from far away. They talk about the time and in the background Angela Lansbury is drinking. She puts down her glass and leans her head on her hand. Then the shot changes to a close-up of Bette Davis and Maggie Smith and you can see Angela Lansbury in the background, with the glass in her hand, just about to take a drink.
Visible crew/equipment: In the scene near the start of the movie when Lois Chiles is showing Mia Farrow her bathroom and Mia Farrow is saying "Yes, It's lovely," on the mirror on the right you can see a member of the crew crawling around on his hands and knees. This is visible on the DVD as well as at the cinema.
Factual error: After Linnet Ridgeway had almost been crushed by a stone falling down from the temple of Karnak, Dr. Bessner advised her to go back to the boat to have a rest. She replied that it can be for just a couple of hours, as she must see the temple of Abu Simbel in the evening. In the next scene, she is really visiting Abu Simbel together with Simon and in the late evening they are back on the Nile steamer. This is absolutely impossible, as the distance between the temple of Karnak and the temple of Abu Simbel is about 400km (250 miles). By that time, it would have been impossible to manage 800km (500 miles) within one afternoon just for a visiting tour. And it is not very logical, as the Nile steamer was going up the Nile to Wadi Halfa, so they would have passed Abu Simbel anyway later during their trip.