[Tutorial] Ripping Guide for Animal Crossing New Horizons

[Username123]

4 folders were extracted but there is nothing inside them. im not able to open then in the toolbox. any ideas? 

i also tried pressing 1, then extracting all the files instead of just the nca files, but that didnt work either.

edit: i should say the nsc builder extracted 4 nca files, but im not sure how to preview them with the toolbox

Most likely there is something wrong with your keys, since the program extracts the .nca files even with broken keys, but cannot decrypt them.