I tried all those things with a live agent remoted in, but they didn't work for me. There must have been a glitch in my work because I tried starting another return on the same computer and things worked properly with it. I ended up deleting my return for this year and starting over on the original account, and it then worked for me.
I don't understand how my online account could have a bug, but it did. I tried on three different computers and multiple browsers, and had the same result every time, so it was not a cookie or cache problem but something in the return itself. Anyway, the problem is solved now. Thanks for your suggestions.
