Does anyone know why tiff files become corrupt. I scan some old pix as tiff's and worked with them in Photo Shop. Some I worked with in Paint Shop Pro. Now I can't open them in either program. Message says "The specified file cannot be identified as a supported type." or "It is not the right kind of document" These files worked for awhile - I was able to open them and work with them. So what could happen all of a sudden??? I am using a Dell XPS 600 with 2Gig of Ram; PhotoShop CS2 and Paint Shop Pro X and XI. Help please.