Hello all... I tried to install the new Security updates for macOS High Sierra this morning and all I get when my machine starts to restart to install the updates is a light black screen and my cursor moves over the to top left-hand side of my screen. I downloaded the three-part updates as one full update... so when my screen hangs, I hard restart using the power button and all comes back fine... but the updates are still showing as needing a restart to update. I went into Safe Mode and individually installed two of the three updates... Command Line Code update and Safari Security update, both installed fine.... but when I go to restart the main Security part.... I just get the same near black screen with my cursor positioned in the top left-hand side of the screen again and the whole thing just hangs. I force start my computer back again into regular startup mode and all fine... so now just this one Security Update 2018-002 10.13.6 is left... I tried to restart hoping that with the other two installed it might work... but it just hangs again. Anyone else experience a similar situation...?