Discovered on a fresh install of processing-3.0a4 (no other versions installed). Path to sketchbook in preferences.txt is set thus:-
sketchbook.path.three=/home/tux/sketchbook
ruby-processing expects requires:-
sketchbook.path=/home/tux/sketchbook
Solution use processing-2.2.1 for foreseeable future, or:-
Discovered on a fresh install of processing-3.0a4 (no other versions installed). Path to sketchbook in preferences.txt is set thus:-
sketchbook.path.three=/home/tux/sketchbook
ruby-processing expects requires:-
sketchbook.path=/home/tux/sketchbook
Solution use processing-2.2.1 for foreseeable future, or:-
sketchbook_path
in.rp5rc