When Professor Robinson enters the machine he is wearing a green sweater over a yellow shirt but his image shows him wearing a blue top.
After Will is pulled into the machine, Penny describes what happened to Doctor Smith and Will, but she only witnessed Will's actions and his disappearance. Will and the Robot were the only witnesses to Doctor Smith's actions.
Will and Dr. Smith disable the wind-up toy monster by removing its key, however, removing the key would not deactivate the working toy, only make it more difficult to wind again.