Quote: file1.htm + image1.jpg and file2.html + image2.jpgYou actually should have `file1.htm + file1.jpg and file2.html + file2.jpg` but I guess you know that? If the image meant as a thumb does not have the same name it will be considered as an image itself, not as a thumb to the htm file. Therefore the htm file will not have a thumb and will get the default one assigned.