Does not work after Burial at Sea 2 installation

After installing the second DLC, Burial at Sea 2, I immediately get an error message saying to delete Bioshock Infinite because it was now “damaged’ and reinstall. This took four hours (39 GB!). Looking forward to the game, I tried again to play it, but got the same error message. it’s not possible to give zero stars, which is what a game you can’t play deserves, (by the way, the main game and DLC 1 played great), so I gave it 1 star just to register my displeasure.

BillyK59 about BioShock Infinite