It's been a while since I did this, so I started over and this time in the DataAssist Pages wizard created a field (FileName) with a file type of 'file' and also in the wizard picked which folder it was to upload to. I also had it create the table for me, in case I had done something wrong there.
The form seems to work just fine - that is, no error messages, the status bar gives the uploading percentages. But when it's all done it stays at the insert page, nothing is uploaded and there's no entry in the database table.
I've run through this a few times but can't seem to get it to work.