The underlying problem appears to be that FTDNA is rejecting files that don't meet some (overly) specific requirement about the contents. We have not been able to deduce what that is, since the uploads work perfectly well at other sites, but it may have something to do with the exact number of rows of data. I think you'll have to wait until the IT department at FTDNA relaxes their requirements. There is a very long thread on the FTDNA forums about this problem. If you follow that thread, you'll probably see an announcement when the issue is fixed. http://forums.familytreedna.com/showthread.php?t=41783&highlight=ancestrydna&page=14 On Tue, Oct 10, 2017 at 6:06 AM, Genealice <[email protected]> wrote: > I don't seem to have cracked this one. Just to make clear, I have > downloaded > the zip file from Ancestry and left it untouched. It won't upload and I get > the same error message. > > > > 'Ancestry dna.txt' could not be uploaded. The file is an unsupported > version > or in a corrupt/malformed format. Please place an order for > <https://www.familytreedna.com/products/family-finder> Family Finder or > download the file and try again." > > > > I unzip and upload the file. I get the same error message. I have changed > the headers I still get the same message. I think it would be logical to > deduce, since other people have the same problem and others have not, that > there might be something wrong with the particular Ancestry file as regards > Family Tree DNA? I upload to Gedmatch and My Heritage without a problem. > > > > Can anyone can shed light on the matter? > > > > Kind Regards, > > Alice >