[Atraikius]

OK, I see the problem now - we are looking at different 'Must Have' lines. By Must Have, I was reffering to:

Num Must Have At Least 1 Ability := 1
Must Have Ability 1 := Launch/Recover Fighters

Not the must have from the ConstructVehicle file. I'm still unsure on some of the ways the ConstructVehicle file works, but I believe that you are right about the Must Have at Least := xxxx line interpreted as must have that number of ships of the Design Type.