I also tried to bring up the ui1 Snapshot, ie: $ ./Snapshot.ui1 Welcome to the Self... "Self 2"
But I wasn't quite sure what method to invoke to bring up an X window. (As you can see, I get the VM prompt, "Self 2", but I don't get an X window as I do with the 4.0 release Snapshot)
Try "ui start". You might get better performance than with ui2, but you'll lose a lot of functionality.