Originally Posted by elcreative
As for jpegs... they aren't text, they don't contain text, they are pictures... bitmaps not character-based so if you copy and paste you'll just make another jpeg... If that is the problem then you could possibly extract the jpeg and ocr it but whether that's worthwhile is your decision...
In the .pdf's that cause these errors within my reader, I can copy and paste the text in the .pdf files on my pc. Therefore, they must not be jpeg's if I am able to do so.