Continuity: When Noelle comes to the radio station to replace Abby's bow, she is wearing a jacket. When we then see her in close up the jacket is gone.
Continuity: Abby's mug disappears when she comforts Noelle.
Continuity: Abby's bathroom door goes from closed to open then closed again, when Brian is confronting Abby and Noelle.
Continuity: When Roy leaves Noelle's apartment after the slanging match in the Hall with Abby, Abby's hair changes side during Noelle's apology.
Continuity: Brian loses his bag when he asks to escort "Donna" out.
Revealing mistakes: When the car brakes for the bicyclist, the stunt driver locks the rear wheels to make noise and smoke. When he drives off, the rear wheels are still locked.
Revealing mistakes: When Brian is crawling on the floor towards Hank when he first talks to Abby on the phone, you can clearly see kneepads on under his jeans
Continuity: Brian and Abby share a walk along the promenade and spend a while watching the romantic sun set. Immediately afterwards, Abby says her goodbyes and walks away. Not only is Abby's face well lit from the side, but there are strong shadows from a fence cutting across the sidewalk.
Revealing mistakes: When is taking photographs of Abby, he switches from a tripod-mounted to a camera to a handheld camera. When he does this, he doesn't change the flash to the new camera (the flash hotshoe is shown to have nothing connected), yet the flash still fires.
Continuity: When "Donna" (Abby) is in the bar with Brian, she spills salsa on her shirt twice, which leaves two stains. When they arrive at his studio, the stains have disappeared, and her shirt is clean. Later, the stains reappear.