Unable to Open recovered JPEG files

I recently recovered 140 JPEG images from an accidentally formatted memory card, but am unable to open them with Windows Photo Viewer or using Adobe Photoshop. Recuva shows them as fully recovered and 'state excellent', but no preview available. The Windows Photo Viewer states that it does not recognise the file format, and Photoshop states that the files are of an "Unknown or Invalid JPEG marker type"

Have a look at http://forum.piriform.com/index.php?showtopic=44926&hl= including the linked content.