Oh shoot. Never ran into that. At a guess it's taking awhile to load because it's your first time running it, but I'll try to get a downloadable version up later today.
Yeah, I was wondering if it was because of my misbehaving internet/loads of tabs open, but there was no indication that it was loading at all, so I wasn't sure.
Unity is just wack sometimes I guess. Either way, there's a windows build and a mac build up now. Windows works fine for me, but I have no way of testing the mac build. Let me know if there are any more problems.