> MADRID (AP) — A major error in the designs of trains for two northern Spanish regions has led to the resignations of two top transport officials, bringing to four the number of people who have lost their jobs because of the controversy this month. > A total of 31 narrow-gauge commuter and medium distance trains were ordered in 2020 for the regions of Asturias and Cantabria but it emerged just weeks ago that under the original designs the trains would not have fitted in tunnels in the regions. > The trains will be redesigned to fit the tunnels, but this will lead to substantial delays in their delivery. > The revelations angered both regions and led to demands for resignations.