no I am not on a mac OS. I had to re-install miktex and I used basic this time. I could compile my code and I could see the output in the second window with XeLaTeX. However this time, when I install all packages in Package Manager and refresh the FNDB database and re-compile my code I can't see the output anymore. It's just all white and blank. I don't understand what happened after update. Is there a bug somewhere ?<br>