IE (and/or Windows) is known to almost religiously ignore any attempts by the server to tell it what type some content is other than its filename. When you "save as" it will realize what it is looking at, but when being presented "inline" you are generally at the mercy of file extensions. You may need to find a way for your link to end in '.tif' or whatever it really is. Problems with this OS misfeature are dreadfully common. --jcc