I have a number of TIFF (.tif) format image files which appear to be corrupt. The files are from an Epson scanner used to scan photographs. The original files are on a remote mac mini I access via screen share, but also copied to a remote HD. Preview does nothing when trying to open. GIMP gives the file corrupt error or unknown file type. I had been able to open up to able a year ago. I'm not sure if it's an OSX issue or an Epson file format issue. Suggestions welcome.