Pro Tools crashing on launch when Soundflow running
System Information
SoundFlow 6.2.1
OS: darwin 25.4.0
ProductName: macOS
ProductVersion: 26.4
BuildVersion: 25E246
Steps to Reproduce
- Soundflow active in background
- Open Pro Tools, startup window flashes quickly and app crashes
- Close Soundflow
- Pro Tools opens normally
Expected Result
Both apps can run and open
Actual Result
Pro tools crashes
Workaround
Close soundflow before opening pro tools
Other Notes
Soundflow v6.2.1, Pro Tools 2026.4. This is only a recent issue, I think only since updating to 2026.4
Links
User UID: oEmCUNvI4UWiEXz5vw3sfgXY5Vl2
Feedback Key: sffeedback:oEmCUNvI4UWiEXz5vw3sfgXY5Vl2:-OtbKWV7hIDqAewDP8AK
Feedback ZIP: VVLefWpeg1AmMyfp62nIttCcmwcJutoKn8gxz1pijRNUC8Zae215jlchWfJ88awbp1fdXFBVJfezFRbPKiUttrem7KUhNjYbrkShf9akpivvnkt4wTqRS7LbV/qQ+BRga4i2KtbPpDwKBeNbGdSCYE1kYMdRSLY539vk3XKJpf7ODb62vFQoxZ9qP2pqa8Glzi0+k7C75Izz0eHPvWe1Al0vMBfpA6fNRckfuCpQizTXiFAWT7dAILyR4KoyTrInJw7vPgxHnWlQMJz74SalZP1fgqcOJauKHD6hO1GFI6P7UoKZUWdYcmzoPh12P8Om5tG2Zkm6MjjQOP66zdB9yQ==
Kitch Membery @Kitch2026-05-27 02:58:04.967ZHi @Tam_Glover4
Thanks for reporting this.
Out of interest, had you restarted SoundFlow since installing Pro Tools 2026.4?
And if you quit SoundFlow from the SoundFlow icon and restart SoundFlow, does Pro Tools crash on startup every time?
Thanks in advance.
- TTam Glover @Tam_Glover4
Hi Kitch,
I have restarted Soundflow, and also reinstalled it (and reinstalled Pro Tools)
I just tried quitting and restarting Soundflow before opening Pro Tools, and Pro Tools opened properly.
Thanks
Kitch Membery @Kitch2026-05-27 03:13:47.295ZHi @Tam_Glover4
Thanks so much for letting me know.
If you experience the issue again, please let us know and log a fresh report so we can investigate further. :-)
Great to have these logs to review.
- In reply toTam_Glover4⬆:Kitch Membery @Kitch2026-05-27 03:06:18.991Z
Hi @Tam_Glover4
It would also be very helpful if you could try rolling back to SoundFlow 6.2.0 to see if this is a SoundFlow regression.
You can find the installer by logging into your account here https://soundflow.org/account/downloads
Thanks in advance.
- SIn reply toTam_Glover4⬆:SoundFlow Bot @soundflowbot
This issue is now tracked internally by SoundFlow as SF-3471
- TIn reply toTam_Glover4⬆:Tam Glover @Tam_Glover4
on 6.2.0 it also crashes. Quitting and restarting Soundflow before opening Pro Tools is no longer working, it is crashing again.
- Kitch Membery @Kitch2026-05-27 03:27:26.777Z
Thanks for letting me know.
- In reply toTam_Glover4⬆:Kitch Membery @Kitch2026-05-27 03:45:42.438Z
One more follow-up question if I may @Tam_Glover4.
Did you recently update to Tahoe, and did the issue perhaps start after the update?
Thanks in advance
- TTam Glover @Tam_Glover4
Yes I did recently update and the problem is only after the update. Could we please look further into this as I am still having to do it each time I open PT
- TTam Glover @Tam_Glover4
i've rolled back to 6.1.3 and PT 2025.12 and am still getting the same issue. Still on Tahoe though. Any ideas?
- Kitch Membery @Kitch2026-05-28 16:22:57.840Z
Hi @Tam_Glover4,
Thanks for the additional testing. I plan on taking a closer look at it this afternoon.
If I can't replicate the issue, I'd love to jump on a Zoom call so we can troubleshoot together and dig into what's happening.
In the meantime, please note that we're still testing macOS Tahoe, and it isn't fully supported yet. You can check our current system requirements here:
https://soundflow.org/docs/getting-started/install-soundflow/system-requirements#macosI'll report back once I've done some more testing. Thanks for your patience.
- TTam Glover @Tam_Glover4
Thanks Kitch, let me know when you get a chance.
Chad Wahlbrink @Chad2026-06-08 22:43:57.607ZHi, @Tam_Glover4 and @Kitch,
I think I know what's going on here. There is a bug we are tracking where if you have a "When Pro Tools becomes active" application trigger set for a runforever script, specifically the "Output Window: Follow Selected Track" command, it causes Pro Tools to crash on startup.
For now, the best option is to remove the application trigger and start the "Output Window: Follow Selected Track" process manually with a keyboard trigger or a Stream Deck button.
Can you give that a try, @Tam_Glover4 ?
Here's a video of me testing this out:
https://www.loom.com/share/1c50adfb62fc4b5a9078557e1ff50c69- Kitch Membery @Kitch2026-06-08 22:45:43.397Z
Thank you @Chad!
- TTam Glover @Tam_Glover4
Wow, that seems to have helped with the crashing on start up issue, thank you! Interestingly I had the trigger deactivated, but by removing it completely the problem has gone. Thanks guys
- Kitch Membery @Kitch2026-06-25 01:55:35.033Z
Thanks for reporting back, @Tam_Glover4!
Glad that fixed the crashing on startup.
Great find, @Chad!
- SIn reply toTam_Glover4⬆:SoundFlow Bot @soundflowbot
This report was now added to the internal issue tracked by SoundFlow as SF-3357
- Progresswith handling this problem