As I add new products from the Catalog/Products menu, everything works fine until I perform the preview of the item. The image name is there but it is a default grey image. I have tried deleteing the product and re-creating it, same issue. I have tried resizing the image and uploading it again, same issue. I have tried deleting the image and FTP it into my image folder, same issue. This happens about once every 10 products. I can see no difference in the JPG files. Has anyone else run into this issue?