wjm

Yes, it must be run locally. Maybe I don't understand how to control the gallery, but I just don't see how to include Actor objects (and the terminal window) in the world in any other way. That's why I also exported, in addition to the full version, a 'sample' version (with reduced functionality) so that you could see what an Ulam spiral looks like.

Sorry for the problem. Just to let you know, this is my first posted scenario so maybe I didn't build it correctly; if I screwed up, once again, sorry. This is what I did to respond to your question: 1. downloaded and extracted zip file 2. dropped Ulam_1_02_full on my Greenfoot shortcut 3. Compile all 4. added actor class to ulamWorld 5. Run it works! Please let me know if I can be more helpful.