Cannot start new Atlantis Game

[Deantwo]

Atlantis is one of the default blueprints baked into the game.

Ooh, I might have misunderstood or misremembered the update. I think it is only talking about the raw .soh blueprint files.

Blueprints Folder
Blueprint .SoH files are no longer distributed with the software. That reduces the game software download by about 80MB. All of those blueprints are available in the Steam Workshop if someone wants them.

The .SoH files are not required to play the game. The game startup data already includes those blueprints, finalized and ready for game play.

I'm not sure that the Blueprints folder was easily accessible when managed by Steam.

But I do remember someone posting screen shots of them having no building blueprints at all in a new save-game right after that update, so I assumed it might have affected ships too.