Yes, I did download the OS X version. Thanks for your reply. I did as you said. Actually, I had already done it, but I did it again at your instructions, and the results were the same.
I had read elsewhere online that in order to "practice" using Express Scribe, once you install it, a practice dictation would appear and automatically load. Not only did nothing load, but there were no files to be found. Also, when I clicked on Help, an empty Help screen showed up. No topics, and the "Ask a question" didn't bring up anything either. That's why I thought it hadn't completely installed.