A few months back I did a fresh install of MacOS (10.13) and when i got to installing LS, i started encountering a slashed circle on boot. In looking into it i found the suggestion of booting into recovery and running 'touch extensions' in /volumes/<mac hd>/library. That has worked whenever i need to reboot, but across many OSX updates and LS updates the problem persists. I know initially removing LS would fix it, but i would rather not go that route. Is there a way i can remedy this and have LS installed? This occured/occurs still on both my Mac Pro and MacBook Pro.