At 20:58 minutes into the movie Nick puts on gloves, is shown wearing them for the next scene - then at 21:14 he puts them on again.
At approx 35 min in, Clem gives Nick the keys to his truck to deliver a Christmas tree to Julie, indicating Nick's Porsche isn't a suitable delivery vehicle. Nick delivers the tree to Julie, and in the next scene arrives home to a delivered Christmas tree on his doorstep. If Nick had Clem's delivery truck, how did the Christmas tree get delivered to Nick.
When Mrs. Gibbons sees the planets hanging from Mia's room, she comments "They are spaced right...it's to scale." But they can't be to scale AND spaced right, and neither is true. At the approximate scale of Jupiter as shown (10"), Neptune would be over 4 miles away, and only 3 inches in size.
Movie takes place in Chicago. When transitioning from scene to scene there are various views of Chicago skyline. But earlier in the movie there is an error where they show skyline view of Minneapolis.