OK, issue solved, in a way. Flew the entire mission again today, and after hitting enter on the DED on each Lat/Lon field and altitude during alignment, the navigation issue was solved, range and distance was showing on the EHSI, datalink was working, and bombs hit targets. I can't say that solved the original issue though, because as written in the above post, I had successfully guided the bombs on target with the TGP before I had figured out I needed to confirm the Lat/Lon during alignment. So, still not sure why the guidance wasn't working the first 6 times I flew the mission. It's probable that I forgot to hit a button somewhere, but can't be sure what. In any case there is no issue now.
