I checked out the org.eclipse.mdt.papyrus/trunk/sandbox/Moka projects. I followed the directions in BasicActiveObjectExample in Moka/examples/test and set the run configurations for launch increment example accordingly.
However, the method MokaLaunchDelegate.instantiateExecutionEngine() fails with message "could not instantiate execution engine". Is there a way to fix that? How can I provide one? I would really like to check out the capabilities of Moka.