I don't know if I'm doing something wrong, but for some reason layeredFS doesn't work on Alpha Sapphire when the game is updated. It'll work fine when I'm using 1.0 (aka no updates at all), but if I update to 1.4, it'll do the usual green flash to indicate it's working, fade to black, and then display the 'an error has occurred, hold down the power button' message. Tried both a retail copy, and a .cia version, same results on both.
Also tried it on both rxtools 3.0b7 and Gateway, same result on both of those, too.