Continuity mistake: Just as "Martha - meet Frank, Daniel, and Lawrence" appears onscreen, we see Daniel and Martha's airplane take off, and when the airplane lands its tail/fin are entirely different. (00:07:00 - 00:12:40)
Continuity mistake: When Laurence and Frank have just sat down at the cafe, Laurence's position changes instantly between shots just as Frank says "is that the action of a friend?"
Continuity mistake: When Laurence is about to describe his idea of the perfect woman, Frank has his left hand covering his mouth as he coughs. The shot changes to a different angle and he now has his right hand, holding a cigarette, up to his mouth, whilst his left hand is folded across his abdomen.
Continuity mistake: When Frank and Martha are walking by the river, he is carrying her orange bag. At first he is carrying it hanging by a strap from his shoulder, but when the angle changes he is carrying it by a handle.