I decided to download 0.11.3 on my mac and upon launching the game after the download I received this message:
"Check with the developer to make sure factorio works with this version of Mac OS X.You may need to reinstall the application. Be sure to install any available updates for the application and Mac OS X".
I did a software update check and my software is up to date, and I had reinstalled factorio and the error remained.
Please fix
![Crying or Very Sad :cry:](./images/smilies/icon_cry.gif)