iPad displays imported PDF file as blank pages

I have PDFs on my Mac that display fine, but the iPad displays all of my imported PDFs on Goodreader as blank pages. I have tried Box.net, Dropbox, all with the same result. And I download a newspaper's pdf from www.bazonline.ch with PDFReader and get only blank pages.If you see blank pages in the PDF file on the iPad, but it shows fine on your Mac/PC. That is caused by JPEG2000 image