Thanks, JamesG1. But no, my W-2 does not have a "W" in box 12 (rather DD), nor did I check that I have an HSA. (I"m quite sure I went back and checked that but I've passed that point now.) I think this is a glitch in the Deluxe program. I did a Google search and found a whole thread of people having the same complaint as I. The recommendation to work around this was to check "None" to the question of whether I had Family, Self, or None coverage of a HDHP on Dec. 1, 2018, so that's what I did and moved on. But thanks once again.
