When opening documents made in Acrobat 5 format (e.g. saved as pdf from a docx file) the document content isn't shown. Only the header and footer logo is shown but the body text isn't visible. This is in the Standalone Reader. Not in a webbrowser. I've encountered this problem with numerous different pdf documents. I've attached an example of a pdf that behaves like this as an upload. (It's a pdf form downloaded from an organisation website. But I also have this problem with bills and overview documents for my Morgage )
I have also included a screenshot 'Blank Screen for PDF' that shows how Acrobat Reader (application) shows this pdf document. Aand another screenshot 'Firefox plugin view for same PDF' that shows how that same pdf document is shown if I open it with firefox instead of the acrobat reader application.