When Von Krolock tells Koukol to go after the vampire killers and Sarah to catch them, he takes a coffin and jumps out of the window, snowracing after them. When inside, you can clearly see that it`s broad daylight outside, but when Herbert and von Krolock look out through the window and see Koukol racing, it's pitch black. The same error occurs during the chase between the coffin and the sled.