I don't understand. I unstuffed a .sit file and it is a .img file now on my OSX 10.1.5 desktop. Whne I double click the .img file, it goes to mount it. Then it stops and tells me I just inserted a disk that contains no files that OSX can read. It was me to eject, initialize, etc. I know there are mac files on there. Is there any way I can open it? Thanks.