Thanks for the heads up! This was my first time exporting to machines that were NOT Windows, as I don't own a Mac. I swore I didn't touch the export settings, but I'm not surprised I goofed it. I'll fix this when I get home.
As someone else mentioned, the Mac download is wrong too, mac uses a generated zip file that should contain a folder that ends in .app just so you know. I can test both for you so just give me a heads up if you want me to check.