Hi maxim_k,

It is not a problem of opening the PDF on my Mac. It is the Preview that doesn’t work when I click on the preview button (red circle on the screen shot).
When I click on it, nothing happen. I can see very quickly (1 sec.) a window indicating the process but nothing happens. Normally I have the PDF automatically on the screen.

For information, the Preview button works on my MacbookPro : I didn’t make the OS update on this computer.