No image but only on certain books

Hi, I have a Sony Reader and I have downloaded several books with no problem from ebooks.com and they have worked fine on both pc and reader itself. Today i downloaded my first book from waterstones website and the file shows up and all text is there in both digital editions and on the reader bu none of the images are? Is this to do with the JPEG2000 format issue? Because I thought this would just effect the book on the Adobe Digital Editions program and not on the reader istelf. The book I bought is just a normal biography. Thanks