I'm trying to use Zend_Pdf to add some text to an existing pdf but I'm getting the following error:

Fatal error: Uncaught exception 'Zend_Pdf_Exception' with message 'PDF file syntax error. Offset - 0xED6. 'stream' must be followed by either cr-lf sequence or lf character only.' in /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/StringParser.php:592 Stack trace: #0 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/Element/Reference.php(167): Zend_Pdf_StringParser->getObject('19', Object(Zend_Pdf_Element_Reference_Context)) #1 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/Element/Reference.php(128): Zend_Pdf_Element_Reference->_dereference() #2 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/Page.php(389): Zend_Pdf_Element_Reference->getType() #3 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/Page.php(419): Zend_Pdf_Page->flush() #4 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf.php(385): Zend_Pdf_Page->render(Object(Zend_Pdf_ElementFactory)) #5 /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf.php(483): Zend_Pdf->_dumpPages() #6 /Users/tonybrady/PHP/Z in /Users/tonybrady/PHP/ZendFramework-0.1.5/library/Zend/Pdf/StringParser.php on line 592

I've stripped out all code which isn't contributing to the problem and can reproduce the error with the following code snippet:

  $pdf = Zend_Pdf::load('crr0303.pdf');
  $page = $pdf->pages[0];   // only has one page
  // Create new font
  $font = Zend_Pdf_Font::fontWithName(Zend_Pdf_Font::FONT_HELVETICA);
  // Apply font
  $page->setFont($font, 10);
  $pdf->save('new.pdf');

It's the call to save() that triggers the error but removing the setFont() call eliminates the error. I'm on a Mac (OS X 10.4.7) and given the reference to line endings in the exception message I wondered if this is a Mac specific problem?