kMIDIMessageSendErr The communication with the MIDI server failed. Declarationvar kMIDIMessageSendErr: OSStatus { get } See AlsoError CodeskMIDIInvalidClientkMIDIInvalidPortkMIDIWrongEndpointTypekMIDINoConnectionkMIDIUnknownEndpointkMIDIUnknownPropertykMIDIWrongPropertyTypekMIDINoCurrentSetupkMIDIServerStartErrkMIDISetupFormatErrkMIDIWrongThreadkMIDIObjectNotFoundkMIDIIDNotUniquekMIDINotPermittedkMIDIUnknownError