just installed beta 4 (first beta running on the system) on a mid-2012 macbook pro (og mbp retina) and starting in either normal or safe mode gets me as far as the login window. after that the desktop appears and items start filling in the menubar and then it bails to the console looking screen, and shows a thin column of text (in that awesome 2 point size the retina display shows during verbose boot as well) for about 3 seconds then the login window reappears. i am hoping the system is available for ssh connections and if possible am going to create a new user, just to confirm there isn't something in my startup items causing this crash. additionally, if i can get into the system i will be able to review the log and have some clue as to the messages it is displaying so briefly.
does this sound familar to anyone? looks like i may be moonwalking back to high sierra fairly soon if i can't get this resolved.