I was very hopeful when I encountered this thread but neither of the solutions seem to work for me.
I am trying to study for exams and the PDFs that open without a problem on my Mac on adobe reader don't show half the text and or images on my iPad.
So I tried to open them on Preview on my Mac, and same thing: text and images missing.
I wanted to follow hel's suggestion but adobe only let's me save the PDF as text, word, rich text or excel files.
I really appreciate any help, so I can go back to studying