Continuity mistake: US Only: Henry reverses on to the siding, then he leaves it again. His tender also hits the station building.
Continuity mistake: When Henry leaves the docks, there's nothing on his footplate, but when he's out of the docks, there are suddenly 2 lamps on his footplate.
Continuity mistake: When Henry sneezes at the boys, you can see that the boys got ashes on them before the smoke has even touched them yet.
Continuity mistake: When Henry sneezes at the boys, in the shot of the boys with the smoke rising up, you can see that they already got ashes on them before the smoke had even touched them.
Continuity mistake: In a close up of the tar wagons before James crashes into them, James disappears.
Continuity mistake: James leaves Elsbridge Station with the brake coach at the rear. When James arrives at Knapford Station, the brake coach is in the middle.
Continuity mistake: The sign says: "Danger - engines must not pass this board." When Thomas passes it, "board" is replaced with "point."
Continuity mistake: Gordon's connecting rods change position after he pulls Thomas out of the mine.
Answer: Breakdown trains help the engines back on track.