I can see the PDF from within the browser or in Adobe Reader. It also shows in the thumbnail in the print dialog box. But, it prints black pages for each page of any of my documents. From within the web browser (Firefox 3.02 or IE 7), print preview shows it as blank also. I can print form other applications. This is using Adobe 9.0 on Windows Vista. Version 8.0 also stopped working recently, so I upgraded to version 9 to try and fix this issue.