Character mistake: When Erin pops Stay Puft, the girls get up. One of the girls says "welcome back" to Erin. She didn't leave the group.
Ghostbusters (2016)
1 character mistake
Directed by: Paul Feig
Starring: Chris Hemsworth, Kristen Wiig, Melissa McCarthy, Kate McKinnon, Leslie Jones
Continuity mistake: After the meeting with the ghost of the mansion Erin hugs Abby and she gets the ectoplasm from her, but in the next shot it disappears.
Kevin: Can I bring my cat to work? He has terrible anxiety problems.
Abby Yates: Oh, I'd love to let you bring your cat to work, but I have a terrible cat allergy.
Kevin: I don't have a cat. He's a dog. His name is My Cat.
Abby Yates: You named your dog My Cat?
Kevin: Mike Hat.
Erin Gilbert: First name Mike, last name Hat?
Kevin: Well, his full name is Michael Hat.
Trivia: There is an end credits scene where Patty is listening to an audio recording and then asks the others if they ever heard the name Zuul, then fades to black. Zuul was an antagonist in the original film, the being inhabiting Sigourney Weaver's character.