Factual errors: At the charity fair it is raining and everyone holds an umbrella. Shots of shoes and the ground show that they are dry.
Continuity: When Charlotte is testing a black dress, she holds a lit cigarette which disappears between shots.
Continuity: The way that Johnny carries Charlotte's blue dress changes between shots.
Audio/visual unsynchronized: Eve reports back to her father in a call box having been unable to gain entrance to the murder house. "Oh don't be ridiculous father, the police won't let anyone near the place" - she actually mouths "near the house".