I have exactly the same problem. First time I opened the launcher Minecraft started, now that I dowloaded the new update of 120MB it stills in "Preparing..." (version: macOS Sierra 10.12.3).
I really hope you'll find a solution!
Vetus
I have exactly the same problem.
First time I opened the launcher Minecraft started, now that I dowloaded the new update of 120MB it stills in "Preparing..." (version: macOS Sierra 10.12.3).
I really hope you'll find a solution!