Troubleshooting

Plugin doesn’t appear in DAW

• Verify the plugin files are in the correct directory for your OS (see Installation).
• Rescan plugins in your DAW’s preferences.
• On macOS, you may need to bypass Gatekeeper (see the macOS installation section).

MTS-ESP not connecting

• Ensure only one Tanghīm transmitter instance is running. Multiple transmitters will conflict.
• Check that your instrument has MTS-ESP support enabled in its settings.
• Check that the MTS-ESP badge (teal) is lit in the top bar, confirming the transmitter is active.
• If the badge is lit but no synths are being retuned, the MTS-ESP shared library (libMTS) may not be installed. See MTS-ESP Shared Library.

Plugin crashes in Ableton (SIGKILL / Code Signature Invalid)

If you are building from source: when reinstalling the plugin, you must delete the old .vst3 bundle before copying the new one. Overwriting corrupts macOS’s kernel code signature cache, causing Ableton’s Rosetta plugin scanner to kill the plugin. Always:

rm -rf ~/Library/Audio/Plug-Ins/VST3/Tanghim.vst3
# then copy the new build

No sound from internal oscillator

• Click the Osc badge (amber) in the top bar to make sure it is enabled.
• Check that MIDI is reaching the plugin (the slider bank shows gold thumb glows on active notes).
• The oscillator is quiet by design (−18 dBFS), so check your output volume.

Stale tuning data

Click Check for Updates in the status bar; the plugin also checks automatically when it loads. If updates are available, the button turns gold and reads “Update Available”; click it to download the latest data. You can also click Clear Cache (which asks for confirmation) to wipe all cached tuning data and force a fresh fetch on next load. Your presets are preserved.

MIDI preset device not responding

• Check that the correct MIDI input device and channel are selected in the status bar.
• If the device was disconnected and reconnected, the plugin should auto-detect it. If not, reselect it from the dropdown.

Receiver shows “No transmitter found”

The Receiver establishes its connection inside the audio processing callback. Hosts that do not run the Receiver’s audio thread will show this message even when a Transmitter is active. Two known cases:

• Logic Pro AU: Logic suspends a MIDI-effect AU track when no instrument is loaded downstream and the transport is stopped. Load a synth after the Receiver on the same track, or start playback, to activate the track.
• Ableton Live: Live does not run the VST3 Receiver’s audio thread. Use the Max for Live Receiver instead.