Hi Juan,
Ps. Let me repeat that I support the initiatives to use SimpleMorphic on Squeak and Pharo, and I'm willing to answer any questions.
IIUC, Cuis' Morphic progressed quiet a bit compared to SimpleMorphic. So we're experimenting with tearing Morphic out from Cuis 3.1 and squeezing it into Squeak.
One thing I noted is that PasteUpMorph code never sets its worldState ivar, but the sole PasteUpMorph instance has a WorldState. How's that?
Our approach is that we fileOut classes from Cuis. Then load it applying some transformations, to rename classes, categories and class references. Then - at least that's the plan - the SMx support package should take care of the rest. What do you think?
Balázs