title: What PDF format or properties must I use to make FPDM work?
body: <p>I'm using the FPDM php script (uses FPDF), which I understand requires a compatible pdf in order to merge form data.  The script's instructions say to use pdftk to do that.  I've done this, and no matter what I do... the script has errors if I try to use anything other than the example template.pdf or ex.pdf.</p>
  
  <p>I can even modify the template.pdf file - just removing elements for example, and re-save it, then run the pdftk program on it, take the corresponding output file and try to use it, and even that doesn't work.</p>
  
  <p>I'm using Adobe Acrobat 8 Professional.  I can see the template.pdf file is pdf 1.4.  I've tried saving in that old format as well, and still no joy.</p>
  
  <p>What am I doing wrong??</p>
  
  <p>fpdm script can be found here: <a href="http://www.fpdf.org/en/script/script93.php" rel="nofollow">http://www.fpdf.org/en/script/script93.php</a></p>