Question: Cannot log out guest user after High Sierra update
After upgrading an early 2011 MacBook Pro to High Sierra, when I "Log Out Guest User" I get a black screen with just the cursor. This used to work ok before the upgrade. I was for one hour with Apple Care on the phone. When they had me boot in safe mode I was able to log in as regular user, but when I went back to regular boot mode the problem came back.