Audio problem: On the oil rig at the start of the movie, the 2 actors monitoring the deep sea submarine's progress are subjected to a major explosion noise - yet they don't even notice it. Only when the 2nd explosion comes and rocks the whole rig do they react.
Continuity mistake: As the movie ends, the heroes walk from the trashed red robot towards the ambulance & trucks, and the woman sitting in the ambulance has a blanket over her shoulders, then there's no blanket, then it's on her knees, then her shoulders, then it's gone...