[PHP] output using ClibPDF is blank

[Don]

Hi,

I am evaluating ClibPDF and have written a sample rpogram to output some text and a 
couple of lines to a letter size page. However, the when the PDF loads onto the 
screen, it is blank.  Can anyone tell me what went wrong?  The code is below. Am 
running Apache Server on RedHat Linux 6.2

Thanks,
Don

Code
------
  $pdf = cpdf_open(0);
  cpdf_set_creator($pdf, "bl_print.php");
  cpdf_set_title($pdf, "Proof B/L");
  
  cpdf_page_init($pdf, 1, 0, 612, 792);

  cpdf_begin_text($pdf);
  cpdf_set_font($pdf, "Times-Roman", 30, "WinAnsiEncoding");
  cpdf_set_text_rendering($pdf, 1);
  cpdf_text($pdf, "Times Roman outlined", 50, 700);
  cpdf_end_text($pdf);

  cpdf_moveto($pdf, 55, 757);
  cpdf_lineto($pdf, 585, 757);
  cpdf_moveto($pdf, 55, 754);
  cpdf_lineto($pdf, 585, 754);

  cpdf_finalize_page ($pdf, 1);
  
  cpdf_finalize($pdf);
  Header("Content-type: application/pdf");
  cpdf_output_buffer($pdf);
  cpdf_close($pdf);