Your skins should not be in your F folder transfer your skins folder out of your F folder to your pc when done left click on the skins folder in your xbox F folder and delete it.And about your settings it's the same as mine I have a 120gb hdd and in my xbox F folder all I have are folders named GAMES, APPS,CACHE.Your F folder is the biggest file on your hdd that for your games and apps everything else you can put in C or E folders.What is in your F folder?And in your skins folder when you open it up do you see a list of folders ONLY with the names of the skins on each one.