Here, try this method. I don't have a mac to test it, but it should work.
1. First, right click on the Ultimate Edition application, then press “Show Package Contents” and then press on “MacOS”.
2. Once you have done that, open up another finder window, just right click on Finder and press “New Finder Window” then press Applications, and scroll down until you see “Utilities” then scroll down until you find “Terminal”.
3. Then open Terminal and type in: chmod (space) + x (space) and then drag in the Ultimate Edition application. Then press the enter button on terminal. Now go to your downloads and open up the Ultimate Edition application. Now open the application normally.
4. You will see a error screen saying that “filename” can’t be opened because it’s from an unidentified developer. Just press the ok button and go to your system preferences, then go to security and privacy, Then you should see “filename” can’t be opened because it’s from an unidentified developer. You will see a button saying “Open Anyway” just press it.
5. Then you will see a error sign, just press Open. And there you have it, Ultimate Edition should now be playable. If this still doesn't make it work, it might be another problem.