And again another issue with a homebrew app, this time with Savegame Manager GX, I was able to extract my save data when I wanted to, but I can't seem to do the reverse, to transfer it back to my Wii, if I try, I get the error "Unable to setUID"

I've searched online for a solution, and I haven't yet found one.

EDIT: No solution for this, but a different way was found, just to manually edit nand. So this is it for now.