CorOS Version: 3.0.1 Describe your issue: Attempting to run Cortex Control on macOS 15 Sequoia, it crashes occasionally on startup when loading preset (but not always). Also, the UI no long updates in response to mouse click events once an edit has been done in Cortex Control. Steps to reproduce …

Turns out it was the power supply I was using. I appears to be injecting some noise into the USB connection making it unstable. I switches to the QC power supply and all is working fine. The power supply was https://www.amazon.com/dp/B0B9R5R3C2?ref=ppx_yo2ov_dt_b_fed_asin_title

Glad you sorted it out, and that’s good to know about that power supply !

Hey, that power supply is listed as having a 2.5 mm end. The QC needs 2.1 mm for power. Did that replacement power supply feel loose by any chance?

They both measured 2.15 mm. Must be a typo in the add.

It is unfortunate that this problem is repeated… It is clear that there is a fundamental problem with the QC boot sequence… Even Sonoma has a boot probability of about 60%… They said it was due to poor USB communication, but once fixed:… It has recurred many times. No matter how great the software i…

Been in contact with neural; Appreciate your frustration. The developers are working on a fix as mentioned, and this will come in the form of a software update, so we ask for your patience until the fix is released. Thank you, have a nice weekend Best regards, Neural DSP Support Team

Thanks for your reply. I know it’s a lot of work fixing bugs, but good luck. I think the fact that you are degrading means that you simply don’t have enough automated testing. Take the weekend off (it’s only Wednesday) and get rid of those pesky bugs!

Unfortunately using the factory power supply didn’t help me. I have been normally powering it with a DC7/Crux but no matter what power supply, no matter what USB cable, it ALWAYS crashes at the last loading block in the startup screen. Every now and then it makes it into the main interface but alm…

Its possible macOS introduced a defect around USB communication error processing. I have seen macOS USB issues in the past.

Working fine in Sequoia (15.0.1) for me. I’m going direct not via USB hub

Cortex Control does not work in macOS Sequoia

Quad Cortex Bug Reports

ScreamOfAnger July 14, 2025, 10:08pm 25

No issue either, M2 Mac Mini, latest Sequoia and CoCo releases.

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Cortex Control does not work in macOS Sequoia

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