...If at first you don't succeed [*whack it with a chuffin' big hammer?*] try, try again!.
Patch now installed, and I've noticed these great un-documented features (some old friends & new) included - free of charge...
a) Kids still levitate if someone gets abducted by Aliens.
b) *Teens not changing into YA, unless at a Dorm - rather than a house in Uni (see note).
c) Game continues by itself (again at Uni) despite being in Buy or Build mode.
d) Game now crashes on exit.
Oh Boy!, and this was in a brand new/patched Neighbourhood!.
To be continued?... :O
Note:- On problem *b) - my sincere thanks to Eric for the amazing & truly essential 'InSimenator' and the option to get around this annoying bug!.