For a few projects I have to use Mapbox’s Tilemill so I can generate mbtile files. I just booted my Tilemill application for the first time on Yosemite, but it gets stuck and I get a never-ending preloader thingie. It seems that the app broke with the update to OSX Yosemite 10.10.
Luckily the solution ain’t that hard. Just build it yourself!