Also, it may be the on provided there is an outdated payload that doesn't work on 10.7.
So if it still does not work try creating your save by doing this:
- Running the hax that works with your Cubic Ninja card to access homebrew.
- Switching your Cubic Ninja card by the Sky3DS.
- Follow the instructions here, specially:
I hope that works, sorry I don't have a Sky3DS besides me so I can't give you a tested solution on a silver platter.