It was written before 1.5, and contains Yamato.
Open the mission in a text editor, and change the Yamato's unit type everywhere you see it from
Quote:
[Group 1.Unit 1]
Name=IJN Kurita
Class=BBYamato
Type=11
|
to:
[Group 1.Unit 1]
Name=IJN Kurita
Class=BBYamato
Type=20
Done.