Troubleshooting
Troubleshooting Checklist
No Matrix Bridge devices in apps
Reinstall HAL drivers, restart coreaudiod/reboot, check Privacy & Security for blocked system software, confirm bundles under /Library/Audio/Plug-Ins/HAL.
Bridges exist but silence
Enable the bridge in MATRIX, verify Matrix connections, check Control Room MUTE/DIM, confirm the DAW is using the same bridge you patched, and ensure the license/trial is valid (guard zeroes output when invalid).
App tap is silent
Re-grant process tap / audio capture permission, relaunch the target app, and confirm the process still appears in the Apps list.
AES67 / NDI empty
Check cabling, multicast, and firewall. For NDI, install the Apple redistributable. For AES67, confirm SAP announcements and PTP status on the LAN.
Plugin editor / inserts misbehave
Rescan VST folder, try OOP hosting, clear a bad insert, and check Activity Monitor for the MATRIX Plugin Host worker . Bypass strips to isolate CPU overload.
Still stuck?
Note MATRIX version (About), macOS version, bridge/device setup, and exact repro steps, then contact Engineering Support.