Huh, guess since that since the Pokemon I hacked earlier all "came" from the PalPark, it won't let me hack six more Pokemon that also "came" from PalPark, due to the PalPark rule of only obtaining six Pokemon from one "cart" per 24 hour period.
Guess I'm going to have to edit my codes soon. Which'll work out more realisticly than they would have otherwise.