When John Kent arrives in Paris and goes to the building where Roberta lives, the doorman tells him that she is on the "troisième étage" and indicates that John should press the corresponding button. John eventually is taken to Roberta on the third floor, which is incorrect since the "troisième étage " corresponds to the fourth floor. In France, the "premiere étage" (first floor) is not the ground floor but the next one up.
The premiere of Huck & Liz's show at Cafe Russe is advertised as being on Wednesday the 25th. Since a November 1934 magazine was seen earlier in the film, the first Wednesday falling on the 25th following November 1934 was in September 1935. However, several days *after* the premiere, the invitation to Roberta's musical fashion show says it will occur on Tuesday, September 10th, which is consistent with September 1935, but which date is over two weeks past in the film's time line.
John is trapped in Roberta's building elevator when it stops between two floors. He calls for help. His upper body is visible, and he spreads the gates slightly open suggesting he will climb "up" and out. Stephanie hears his calls for help, comes to his rescue, but advises that it is too dangerous to climb up and out. Stephanie yells in French to the doorman, who is on a lower floor, to move the elevator. The scene changes to the doorman, who pushes the "down" elevator button. The scene changes back to the floor where John is trapped and Stephanie is standing, as the elevator moves up, and John exits.