Continuity mistake: Kate reads and crumples Matt's letter into a ball. Kate sets it down to her left, and the wad is a flat sheet of paper. (00:38:05)
Continuity mistake: Near the start the left side of Romy's hair dangles, but strands are suddenly held behind her ear. (00:06:45)
Continuity mistake: The husband takes photos of his bride as she walks towards him on the shore, which is free of rocks for yards in both directions. They take several steps along the shore, and there are big rocks in the water near the coastline. Alternating rear views show no rocks. (00:04:00 - 00:04:25)
Continuity mistake: Lucia's hair goes from disheveled to styled during the time it takes for Pia to say (over the phone), "You've gone almost a decade without a single, serious relationship, Lucia." Moreover, Lucia is already applying mascara. It takes longer than 5 seconds to style/fix one's long hair. (00:01:23)
Continuity mistake: They say Eden's former partner died in a diving accident in Barbados. Later in the movie, they are looking at statements from witnesses to the drowning from Bermuda.
Continuity mistake: The phone in the foyer of the Simon house is a dial pad, but changes to a rotary more than halfway through.
Continuity mistake: When Lenny is directing the choir, and really getting into it, the cigarette he has jumps from his mouth to his hand instantly.
Continuity mistake: Isabelle Huppert managed to blackmail the two main characters into at least getting some tasty sausages, for a start. She takes a bite of one, dripping with mustard. In the reverse shot, the wiener is whole and dry. (01:17:25)
Continuity mistake: Scene inside the shrink's office at the beginning of the movie; Bert's daughter reacts as he mentions "the c word." Her mum is at the rightmost seat, with both hands on the pillow. In the next shot, her hands are in completely different positions. A similar mistake occurs later when the mother asks her daughters to leave. (00:04:40)
Continuity mistake: The windshield of Jud's car is still cracked while he is driving to Timmy's house from the hospital; however, when he gets out of his car and you see the windshield, it doesn't have a crack in it. (00:22:00)
Continuity mistake: At the start, when Dog takes his food out of the microwave, two game cartridges (Seaquest and Grand Prix) and two controllers for his Atari 2600 are on his table. When he walks back to the couch, those game cartridges have vanished, and there is only one controller on the table. In the next shot, there are two controllers again, as seen in the TV's reflection. (00:02:20)
Continuity mistake: At the beginning of the Spooktacular, Lucy is dressed up as a vampire. However, when Todd is playing the organ, Lucy's dressed up as a bat and then dressed as a vampire again. There's no way she can change costumes that fast.