5 or so years ago i was using snestool12 on windowsXP because i had to recover old floppies that didnt work. the game isnt the issue i tried a bunch and they all do the same ,just load 1 file and thats it. small games work perfect with a drag and drop onto an external floppy usb drive.. since i cant open snestl12 on windows 8 (which is by far the worse windows ever lol) try it for me with any larger game thats over 1.44, try that program u posted... it splits but it doesnt split to allows the other files to be loaded when using the swc