Make sure you have: 
"sm4shexplorer 0.07.1\workspace\content\patch\data\sound\config\fightermodelbanktable.mtb"
present in your smash explorer folder
if not go to: 
"data\sound\config" and extract fightermodelbanktable.mtb
then take the extracted file and replace it so that it turns green in smash explorer
extract these files to the root of your smash explorer folder
run _Auto-MTB Tool.py it should pop something up that appears and will stay open until you close it
if it closes automaticaly then there was a error
to tell me what the error was, shift + right click on a blank spot in the smash explorer folder and open a cmd window in that folder
drag the py script in and run it, then give me a screen shot of that error

common issues:
your sound banks are named incorrectly
make sure that if they have a slot specific number that "_cXX" is present in the sound banks name
and that it matches the exact case of the one that smash explorer has by default.
your done!