I am able to incorporate a file upload into a form OK, but if the user wishes to replace that file with a different one, the process runs into an error. Users can access the content they entered in a form via the dashboard widget. When Edit mode is activated, they can click on an "x" button to delete a file, which is then replaced by a Browse button.
However, even if they browse a new file and then Update, the file is not replaced. I suspect this is not the correct method to do this. What can I do?