Other mistake: There's a typo in the end credits - an extra S in "3rd Asssistant." (02:16:30)
Other mistake: When Marry Anne flies into the dark forest for the first time she drops the boutonniere. After seeing the primrose petal she flies off empty handed but has the boutonniere later when she meets Roland.
Other mistake: After Dr. Palmer and his friend Ryan have placed the miniature horses in the back of his truck, he drives off. After this, a robot runs past Ryan chasing after Dr. Palmer. The robot takes a shortcut through a forest and then leaps off a very tall cliff, but somehow Dr. Palmer's truck is directly below, driving at the bottom of the cliff, despite only driving off a couple of seconds ago. (00:13:30)
Other mistake: When Thomas leaves Knapford at the end of the special, a train is derailed at an adjacent platform.