Starcraft 2 on Macbook Pro Retina on external 27" - No valid resolution

Question

My primary monitor is set to the 27" at 2560 x 1440.

I can't window and unwindow (command + m) either. what to do!?

Answer 1

Well I figured out that you can just do "window full screen". Only problem is that playing liek this is really annoying since your mouse goes outside the window, and the performance degrades. :(

Answer 2

Solution:

1. Go to cd ~/Library/Application\ Support/Blizzard/StarCraft\ II/
2. Open Variables.txt
3. Change displaymode to displaymode=0

Game should open in windowed mode and allows you to change it to full screen mode and choose resolution.

displayMode=0 (for windowed) 
displayMode=1 (for windowed fullscreen) 
displayMode=2 (fullscreen)

Make sure you have write access to the Variables.txt (You may have not due to workaround for the language package issue). By chmod in terminal or cmd + I on the keyboard.