This converts without error in Snapin8r, but the resulting Snap file does something interesting with the on background change events... it creates new events with the names of the backgrounds. As this event type isn't really supported in Snap, I'm not sure if what Snapin8r does is the right thing or not. It was pretty easy to code in what needed to be added based on what Snapin8r produced
See http://scratch.mit.edu/projects/41703350/
This converts without error in Snapin8r, but the resulting Snap file does something interesting with the on background change events... it creates new events with the names of the backgrounds. As this event type isn't really supported in Snap, I'm not sure if what Snapin8r does is the right thing or not. It was pretty easy to code in what needed to be added based on what Snapin8r produced