App doesn't open for me on Mac with 2.0.2, 2.0.1, and 2.0.0.52
I haven't tried any others.
Please launch Terminal.app and then run
mono ~/Downloads/MultiMiner.app/Content/Resources/MultiMiner.Win.exe
You may need to adjust the path if the app is not in your downloads folder. Please copy & paste any errors written to the console in this thread.