It's in a zipped folder, you have to extract the zip and it should give you a .app I know it's kind of strange, I'm actually not a MAC user. But from what I'm told a .app is just a folder with the .app at the end of the extension. So you should extract the zipped folder as a .app
If it's still broken after you do that, do tell me, I actually don't have an Mac to test it out. Best I can do is republish it and hope nothing goes wrong...
I republished and rezipped the .app archive, I hope this fixes it, otherwise I don't know how to go about fixing it. Really don't know how MAC computers work.
The next public release build will be on the 31st, I hope that version will be fixed. I'm actually not sure what is causing the problem. I also don't have a Mac for testing.