After you file

Bingo... yes, it's the SC state return from the desktop software, and you were right on the money!  I noticed even on the online version, the 2024 ES were the last to be finalized, so it doesn't surprise me that it was the troublemaker.  Once I figured out how to update (I've switched to a Mac laptop this year), I was able to get past that annoying screen. 

Many, many thanks!