THIS FORUM IS NO LONGER ACTIVE. PLEASE POST ANY NEW QUESTIONS OR DISCUSSION ON:
https://discourse.mcneel.com/c/grasshopper/kangaroo
The discussions here are preserved for reference, but new questions posted here are likely to go unanswered.
Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper.
Corrado Giacobazzi
If you have already downloaded the latest release (Kangaroo Version 0.0.5.1), maybe the issue is that you still have to unblock the .gha file as described here: http://www.food4rhino.com/project/kangaroo
Hope it helps!
Cheers
Apr 2, 2011