When the helicopter drops CEO Justin Juarisco on the roof, the helicopter is seen flying off, then 2 cuts later it's standing still (supposedly on the roof) as the pilot gives Justin a thumbs up to his command to wait for him there.
When they are hiding in the clothes shop, Gabe racks the shotgun, but no empty shell comes out twice. But both times when he shoots a round fires.
At the beginning of the movie Doug orders Technician Graham to have Larry (the dinosaur) brought into the operating room. It is actress Kelly Dolan who answers, but in the cast list she is credited as Technician Rosario.