Continuity mistake: When Prince Henry first approaches Leonardo da Vinci and then chases after the thief, the horse he rides on is dark bay in color and has no markings on its face. After he shouts, "Ugly peasant bastard!" in Henry's next close-up he rides a black horse with a white 'L' shape mark between its eyes.
Visible crew/equipment: After the Baroness is stripped of her title, Danielle makes her entrance and everyone bows. When her stepmother has turned to face her, as everyone rises the actor's T-mark taped to the floor is visible to Jacqueline's right, behind the former Baroness. (Only visible on fullscreen DVD.)
Visible crew/equipment: In the market scene when Prince Henry almost sees Danielle and she throws the chicken at him, because they didn't want to injure Dougray Scott, who plays Henry, they put a glass plate in front of him so the chicken would not harm him. If you pause it right after Danielle throws the chicken, you can see the reflection of the chicken's legs towards the right of the screen.
Continuity mistake: While Danielle is up in the tree, when Henry is punched by the Gypsy and lands on his back, the Gypsy draws his two swords and holds them up high. However, when Henry says, "Oh no, it's you again," both of the Gypsy's swords are sheathed and his hands are down. Then, when Henry draws his own sword, the Gypsy's swords are still held up high.
Revealing mistake: When the Grimm brothers' carriage pulls away from the castle, after Danielle's story is told, just before the screen fades to black, a blue car with a white top (and a couple more nondescript), can be seen parked in front of the building with a brown roof, at the bottom of the screen towards the right.
Continuity mistake: When Danielle is climbing down the tree, in the overhead shot the Gypsy is holding the sword in his right hand with Danielle's dress held up high on the sword tip as he thanks her, but next shot he's gripping the dress in his raised left hand. (More visible on fullscreen DVD.)
Continuity mistake: Prince Henry rides up to the manor to return the horse to the Baroness, and when Marguerite and Jacqueline stumble over themselves to greet the Prince, Marguerite's long hair braid ends up over her head beside her cheek, which she promptly flips to the back of her head. Yet, this braid reappears and disappears repeatedly in the following shots.
Continuity mistake: When Marguerite threatens to toss 'Utopia' into the fireplace, she holds the book out to her left, where the fireplace and its roaring fire are located. When Danielle hands over the glass slippers, Marguerite moves her arm from her side and proceeds to forcefully throw the book down directly in front of her (between Marguerite and Danielle, who face each other). Odd though, how in the next close-up 'Utopia' is shown having been tossed straight into the fire to burn, as Danielle screams.
Continuity mistake: At the manor, when Leonardo da Vinci hugs Danielle and says, "Think of it as a belated wedding present, Your Highness," the distinctive wood chair (more are seen all over the manor) is under the side window behind him, also visible as Danielle takes Henry's hands and pulls him towards the alcove with the two windows. Next shot, however, that chair is gone from behind Danielle (where the side window is) and there is only a wood table in front of the center window.
Continuity mistake: Before Auguste De Barbarac arrives home, from the upstairs window young Danielle is speaking to young Gustave, who is down below. The window/frame/hinge differ between exterior shots facing Danielle and the interior shots facing the courtyard. The wallpaper is an entirely different print as well, and the silver pitcher does its own vanishing act.
Continuity mistake: After Marguerite tastes the chocolate, when Henry walks over to Louise and Paulette, Louise holds an abundant armful of corn ears in the shot facing the women. In the shot facing Henry, as she turns her body there is nothing in her left arm, but then the corn is back for her to toss.
Factual error: Leonardo da Vinci's painting, the Mona Lisa, was originally painted on wood, impossible for it to have been unrolled after taking it out of the canister. Also, if it hadn't been painted on wood, it would have been painted on canvas, which doesn't stay partially rolled after you take it out of a tube of some kind. It would not have been painted on paper.