Hayley claims that Levi's concert is about to start, even though the sign clearly shows it won't take place until later that night. This error remains throughout most of the beginning of this episode, referenced over and over.
While spying on the new foot soldiers from a hill, the entrance of the underground mine is light brown in color, has one wooden plank holding up the ceiling, and has something blocking the bottom half of the entrance, but when the Rangers attack the soldiers, and Brody and Sarah run inside, the design changes to dark brown, with no plank to hold up the ceiling, and nothing blocking the way of the entrance. Also, the position of the two guards at the entrance changes between close and far shots, between being there and not being there.
When the Gold Ranger summons the Bull Rider Zord, he enters the cockpit, but when he activates Ninja Master Mode, he "reenters" it. Also, he feels like he activated the mode for the first time, even though he first used it in the previous episode.
During the shot of Brody and Sarah running to the entrance of the underground mine, both characters were oddly placed (too close to the right), showing Sarah's elbow clipping through the wall as she runs in. The shot was a green screen effect, most likely due to not being able to show them entering for real for whatever reason.