So When I had OS X 10.9.5 (Mavericks), I could play the game. I had bought it because I loved it.
After I upgraded to 10.10 Yosemite, everytime I try to launch I get the following error?:
Process: factorio [65608]
Path: /Applications/factorio.app/Contents/MacOS/factorio
Identifier: com.factorio ...