The icon of the files are not differant from any others and the properties look pretty well alike. The only factor that stands out is that this has only happened to all the images in one folder. Somehow the file names have had a prefix added to each of the files. Files from my camera are in a date and number format typically 20090725_2633. The files had a prefix added so the above file is now mpics 2009_20090725_2633. This prefix is the same for ever image, how it happened I do not know but is this a clue? If this is not of any help then I think we will have to call it a day. Do you have to close/stop this thread if so how do you do that. Many thanks for all your efforts.