I'm finally back up and running, thanks to DjNDB and others who've posted tips. Thanks, all! Of course, I've just started Ep. 2. Can't wait to do this three more times ...
One thing I would point out in case anyone missed it elsewhere (I certainly did the first few times I tried this) is to be patient if it seems like the game is locked up or frozen. I had to sit through at least three different unresponsive states of 2-5 minutes each before I could finally start playing Ep. 2, but when it finally did go through, it worked like a charm.