Musescore instrument with soundfont from exterior application not playing when score is puplished on musescore

I am trying to publish a score to musescore.com, but the electric bass's sound is completely lost. I can hear it perfectly in the actual musescore application, but there's no sound when the score is actually published to musescore.com. This instrument is using a soundfont from Analog Lab V, but so are two other instruments in this score, so I don't know where the problem is.