Adobe - Warning Empty Page - Read Out Loud

ZedCar

I have tried listening to books in PDF format using the Adobe 'Read Out Loud' function in their PDF reader.

It works without problem on one book, though on a second book the voice states "Warning! Empty page." for every page in the book.

Would anyone have any ideas as to what might be wrong?

Thank you.

Borek

Can you mark text in the other book? Sometimes books in pdf format are just scanned images, without OCR.

ZedCar

I can highlight the text in both books using the cursor.

So the book is not composed of scanned images.