I can only export to Mac?

I was going to export my game to test it out on my PC but for some reason I can’t export to PC or Linux for that matter. Why? I’m really mad right now that I only have this platform to export to…

I believe you have to download the relevant platforms. Go back to your installer and select the platforms you want to additionally download. I think it initially only downloads the platform you are on.

yeah you have to manually add any additional platforms you wish to export to now, more information here

Dude! How To Export Xbox 360 Games?