Open the handling.cfg with a notepad, search for the line of Landstalker that starts with its ID LANDSTAL. You have to replace the numbers on that row, by selecting them all and pasting the line, from the ReadMe file (given with the mod), over the line. Or, you can change the individual number below the distinct column one by one, which would take a lot of time.
Huge thanks to K-evin
for this signature.