You might want to spend the time to set up the USB driver so you can install NSPs over USB. That way you won't have to worry about splitting them first, it's faster and much easier too. Especially if you're going to be doing this often.
And, based on your screenshots we can tell that it's obvious you're not using NSPs for "legit" purposes. You might want to search for information about a certain shop... would make life easier for a noob like you...