Hi everyone,
I am experiencing a critical issue with DMX output in VST Live 3 Pro on macOS Sequoia 15.2. I am unable to get any data out of my interface, even though the hardware is verified to work perfectly with other software on the same machine.
My Setup:
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OS: macOS Sequoia 15.2
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Software: VST Live 3 Pro
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DMX Interface: Eurolite USB-DMX512 PRO (FTDI-based)
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Fixtures: 2x Stairville VF-1200 DMX Fog Machines
The Issue: In VST Live 3 Pro, the LED on the Eurolite interface remains solid red, indicating it has power but is not receiving a DMX data.
Extensive Troubleshooting within DMX Tracks: I have tried various configurations within the DMX tracks to trigger a signal, but nothing changed the red LED status:
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Universes: I experimented with changing the assigned Universe settings.
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Monitoring: I toggled the Monitoring (Input/Output) buttons on and off.
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Faders/Values: I manually moved faders and drew automation curves (values 0-255) to force a data change.
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Chase Menu: I tried every possible configuration and mode within the “Chase” menu.
Comparison with QLC+: I tested the exact same hardware setup (same USB port, hub, and cables) with QLC+.
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In QLC+, the interface is recognized immediately.
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On Port 1 and Port 2, the LED turns blinking green instantly, meaning it is receiving DMX data.
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This proves the hardware and the macOS driver/permissions are working fine; the issue seems isolated to VST Live 3 Pro not “opening” the port.
My Questions:
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Am i missing a switch or something to activate the DMX stream?
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Why does VST Live 3 Pro not initiate the data stream (Green LED) while QLC+ does it automatically?
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Is there a hidden preference to enable DMX global controls in version 3.0?
I added screenshots of all relevant windows within VST Live 3 Pro and QLC+ and my macbook pro specifications.
Any help would be greatly appreciated! Thank you!
