cfimage error

Hi.The code below works for the most of my jpg files.but for some pictures I got the below error:

Ensure that the destination directory exists and that Coldfusion has permission to write to the given path or file cause : coldfusion.image.ImageWriter$ImageWritingException: An exception occured while trying to write the image.

here is my code:
It seems some of my pictures which dont work properly are created by Photoshop cs Mac & have color Representaion:Uncalibrated.I mean when I save them as jpg on MSpaint or photoshop they work fine.
plz help what should I do?
thanks