Hi everyone,

I am also suffering from the same problem described here :
https://boinc.berkeley.edu/dev/forum_thread.php?id=11668&postid=79080#79080

But found a workaround:
I had the same problem at least since Mac OS 10.12 and Boinc 7.6.34. I upgraded first Mac OS to 10.13.2 then BOINC to 7.8.4, no change. The BOINC daemon kept running fine in the background, so it was more an annoyance than anything else.

After trying stuff with the BOINC Manager interface, I realized I could enter the network address of my Mac in the Advanced menu, select it and then finally got my graphics back. Caveat: it isn't saved after quitting the manager.

To do this, display the Advanced menus, go to File > Choose Computer (or something equivalent, my interface is in French) > enter your local network address (eg: MyMac.local) and OK.

Seeya,
Paul-Henri