Some NBS files can not load with the message
java.io.IOException: NBSUtils can not handle custom instruments (yet)

If you have problem with your own nbs, try:

1. download newer version of note block studio. << they have different export settings
2. look at your parameters. << maybe it’s too long? Maybe your [ticks per second] are set wrong, try 5,10,15,20.
3. name of file. << it has to be same as emote file