you have to add it to your player(race) file?
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capitalShipInfo
Page:0
count 5
entityDefName "CAPITALSHIP_TECHBATTLESHIP"
entityDefName "CAPITALSHIP_TECHCARRIER"
entityDefName "CAPITALSHIP_TECHCOLONY"
entityDefName "CAPITALSHIP_TECHSUPPORT"
entityDefName "CAPITALSHIP_TECHSIEGE"
if tech or jiust the race you are editing.
make sure the number of cap ships you have in the entitydefname matches your count