Select Only Solids

[TIG]

You are right !
Another typo - misplaced (...)
Here's a working version [I hope!] to select all solids in the model [active-entities]

m=Sketchup.active_model;s=m.selection;s.clear;a=m.active_entities;s.add((a.grep(Sketchup;;ComponentInstance)+a.grep(Sketchup;;Group)).select{|i|i.manifold?})

[Einstein]

This one is working, great!
I appreciate your help.