NEVER MIND! Figured it out.
Just for everyone's info, and maybe for the tech department, here's what happened:
I entered her as Elimina (Hobson) Perkins. When I went to add her husband, I realized that Perkins was his middle name (Charles Perkins Lyon). Then, with the "add spouse" edit window still open, I went back and edited her profile to change her married name to Lyon. I saved it and went back to the add spouse window. That's when I got the "Edit Conflict" message. Apparently, the system doesn't like changes to be made to a profile in the middle of adding a family member.
I clicked add spouse on her profile again, re-entered his data, closed the other "add spouse" window, then saved. Problem solved!