Import has stopped working
I have a Filemaker file which I created and have been using for a few years, to which I weekly import data from other files. The importing from these other files has suddenly stopped working. When I try, I get the message: "No fields are defined in the data source". I don't think I'm doing anything different than I did before, either in the export procedure or the import procedure. I've looked carefully at the export and import dialog boxes for any setting I might need to change (because other people also use these files), and I don't see anything that looks like it would affect this.
What would cause the sudden failure of all import attempts, and what can I do to fix this?