Thanks, Ray. I was afraid you were going to say that. Well, I'll leave everything as-is for now and hope for the best.
I was actually in the process of recreating all of my pages since I last posted here and DW just crashed as I was begining to create the detail page. Lost a good 45 minutes of work. This is not an unfamiliar experience, unfortunately. :-(
UPDATE: Apparently DA Pages has an auto-recovery feature I was unaware of, so all my work is saved. (!) However, I'm still crashing each time I try to move a field up the list in the detail page view using the ^ arrow. Is this a known bug?