Can you go to Options > MIDI Input/Output Ports, and on Bass choose "MIDI Plugins", then click <-- Set All Ports To This and click OK.

Next, click on the Plugins button in the File or Misc toolbar, and choose Default Synth. In the upper right, make sure the option selected is <AUi> Apple: DLSMusicDevice.

Now close that window and try playing your song.

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Mac Plugin.png (557.02 KB, 6 downloads)

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