Thanks for letting me know. As Mentioned in the page, the Win64 version is the version I am joining the competition with, the rest, however, should be identical, as in, I just chose the option to compile to them, but have not tried them.
Especially when it comes to MacOS version, there were lots of versions to pick from, like PPC etc. and I chose the x64 version (if I correctly recall), not knowing any better, and I think you need to do something for the contents still after unpacking them on Mac, for I recall I once did make a compile (of another project) which I tested on Macos machine, and idea was that I was supposed to move the files to some certain location. That maybe there was a folder called "resources" or "content" or something like that, and then all but the exe-file was supposed to be moved there to make it work.
That essentially, I assume, it is easy for someone who keeps using MacOS all the time to figure it out, but not for someone like me who dont know much about it.