I appreciate the response. Unfortunately the data source is generated by another program which can only come out as a text file. The header is only one row because it should never be seen.

To get it working with just one header row I would use the "Mail Merge Helper" and relink the header. To get that button you need to add it from the list of buttons not available on the ribbon.

The part that is really weird to me is that all of this works in word 2003-2007 format. All i did was click convert. If you use a .doc for the document and header and the text file as the data-source everything should work correctly.