I've edited the part you mentioned. But I'm not sure if you'll be able to run the final scene as I've tested it and the script has no issues with that.
You have reached the last scene. The next scene is going to be in the background as a video file which may sometimes crash on some computers and it will be removed in the next version because it is not a game content. You can save the file at this point and wait for the next version without problem :)