Problem with soundboard app

[Saku]

I have an app that is supposed to become a soundboard app, but I’ve got a problem where I think I have too many buttonsplaying sounds. I have 18 buttons and one switch in my blocks and when playing the app the first 15 pressed buttons/switch work, but not the latter 4.

Is this a bug or am I missing something?
Switch:

Button:

[Mark]

Saku,

Any chance that you share your project with us (see here for how) so that we can better diagnose the problem?

-Mark