GUI works only in MVC.
How to start
1) evaluate:
LispInterpreter open
Release 2
GUI works in MVC and Morphic both. On MVC, no longer 'Pluggable-Support' needed. MVC, Morphic version runs on 3.8 #6665 later. Morphic version developed Squeak 3.10.2-7179dev08.09.1 image.