My apologies. As soon as I sent my message I noticed that there were similar messages already in the forum. I did look! Still, I'm not sure there's an answer for me here yet, so any help would be appreciated. I will keep at it.
Thanks for the suggestion. I've tried deleting the preferences folder for Filemaker, but no joy. I wasn't planning on upgrading for a bit, since the older version did all I needed, but it looks like I don't have a choice.