I am on mac os catalina. I toggled the "anywhere" option in security and I am still getting the damaged error message.. Please help!
Problems to run in Mac? Check this solutions
Solutions for: Unable to find game
Some people fixed simply with changing the exported folder for another. Just moving the site.
Solutions for: APP damaged and can't be opened
Official solution provided by YoyoGames(GameMaker developers):
Alternative for MacOS Sierra users:
Using the terminal: