Ofxgui : text missing

I'm on osx 10.10.5, macbook pro 13" mid-2012, new to openFrameworks but sure that my laptop supports 4.1. As you will see 3.2 give me the same thing. nothing in the console : (

Capture d’écran 2015-11-26 à 14.14.50.png1277x774 99 KB

Do you have any possible clue ? I can dig it if you don't get the same result.