Solutions for: Unable to find game

https://forum.yoyogames.com/index.php?threads/unable-to-find-game-after-compilin...

Some people fixed simply with changing the exported folder for another. Just moving the site.

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Solutions for: APP damaged and can't be opened

Official solution provided by YoyoGames(GameMaker developers):

https://help.yoyogames.com/hc/en-us/articles/216753168--Downloaded-app-is-damaged-and-can-t-be-opened-

Alternative for MacOS  Sierra users:

https://howchoo.com/g/yty3mdvkyty/how-to-download-apps-from-anywhere-in-macos-si...

Using the terminal:

https://discussions.apple.com/thread/768292