Continuity mistake: Chapter 2: Freezing Torture. When Dale falls from the mountain, her pick stays on the top but she still has it in her hands in the next shot.
Continuity mistake: As the crew of an English ship are crouched down on deck prior to a battle with a Spanish galleon, one of them stands up and moves to the other side. As he does so part of the background projection (ocean and sky) is shown on his back.
Continuity mistake: The number of pirates assaulting the hillside keeps changing. There are hundreds of them, then fewer than thirty, then hundreds again. In many scenes, in fact, there are far more pirates than could possibly fit aboard their one small ship. (01:55:30)
Continuity mistake: The parts where Marta fires her gun into the door, she fires 10 shots out of a six shooter.
Continuity mistake: In the climactic sword fight between Power and Rathbone, the Captain hand Diego a sword and they immediately start a classic duel. At end, Diego pulls off a dueling glove that he had never put on.