When Cooper enters Jenna's office she can be seen ending a phone call and setting the phone on her desk. When the camera angle changes Jenna has the phone up to her ear and again ends the call and sets the phone on her desk.
In one of the scenes, the main characters go Christmas tree shopping outdoors, at around 5pm in Boston a few days before Christmas. At that time of day in late December it would already be dark in Boston, yet the scene was shot in broad daylight.
In one scene, Mia holds of a photo of her choice for a photo shoot. She says "Teotihuacan". It's not. It's Chichen Itza.