ERROR ITMS-9000: "File given does not match type JPEG ... Image is likely corrupt

Question

Hi ALl,
On compliing my book  get these errors with ITunes producer...I've resaved the files out with photoshop and they seems fine?
Package Summary:
1 package(s) were not uploaded because they had problems:
          /Users/Umran/Music/iTunes Producer/Playlists/9780957408654.itmsp - Error Messages:
                    Apple's web service operation was not successful
                    Unable to authenticate the package: 9780957408654.itmsp
                    ERROR ITMS-9000: "File given does not match type JPEG Image because of these validation issues: ; Error=com.apple.jingle.leghorn.fileformat.ValidationError@1cf629f[userString=An unknown error occured while parsing. Image is likely corrupt.  Exception message: null]" at Book (MZItmspBookPackage)
                    ERROR ITMS-9000: "File given does not match type JPEG Image because of these validation issues: ; Error=com.apple.jingle.leghorn.fileformat.ValidationError@1801285[userString=We reached the end of the file before we expected. Image is likely corrupt]" at Book (MZItmspBookPackage)
                    ERROR ITMS-9000: "File given does not match type JPEG Image because of these validation issues: ; Error=com.apple.jingle.leghorn.fileformat.ValidationError@1e056e9[userString=We reached the end of the file before we expected. Image is likely corrupt]" at Book (MZItmspBookPackage)
                    ERROR ITMS-9000: "File given does not match type JPEG Image because of these validation issues: ; Error=com.apple.jingle.leghorn.fileformat.ValidationError@11d58e0[userString=We reached the end of the file before we expected. Image is likely corrupt]" at Book (MZItmspBookPackage)
                    ERROR ITMS-9000: "File given does not match type JPEG Image because of these validation issues: ; Error=com.apple.jingle.leghorn.fileformat.ValidationError@127c00e[userString=We reached the end of the file before we expected. Image is likely corrupt]" at Book (MZItmspBookPackage)
                    ERROR ITMS-5107: "VirtualLandscapesTheModernEra20002012.epub: Fixed-layout books must supply a text or bodymatter starting location in the guide." at Book (MZItmspBookPackage)
Any advice??? Hope someone can help!

Answer 1

iBookstore Publisher Support send me a fast response email which included some helpful info:
Please make sure that all image files inside the ePub end with one of the following: ".tif", ".jpg", or ".png" and that the file itself matches the file extension type. To check if the image file matches the file extension type, please right click on the image then select "Get Info". Once the info tab appears, please make sure that the file extension type of the image file matches the "Kind" found under "General".
For further information regarding embedded images, please refer to the iBookstore Asset Guide, which is available for download in the Deliver Your Content module in iTunes Connect.
And they INCLUDED THE TRANSPORTER LOG (!), the log generated by iTunes Producer as it tries to upload a book. We were able to search for the Validation Error # within the log and find out which image Producer was trying to upload when it encountered an error. Turns out the problem was a corrupted screenshot jpeg.
Grateful!