Small update: tried a brand new USB B > USB C cable so avoiding a hub and connecting direct from QC > Macbook. Same problem no fix.
QC still sees it as ‘Connected’ on the diagnostic screen though.
Pretty sure this is a CorOS update bug now. Will have to wait for a point update fix.
You can’t use USB 3.0 for connecting the QC to your computer because the QC only has the USB 2.0 Type B socket (Google USB type b 2.0 vs 3.0). Your computer may be have an USB 3.0 socket but the standard/version used for data transfer will be 2.0.
just to note; self-powered hubs work fine (in my case, anyway)
I’m using one that has its own power adapter, it doesn’t take power from the computer. My QC is connected to it and Cortex Control is working fine.
I wouldn’t be surprised if USB-powered hubs don’t cooperate though, just don’t have one to test right now.
Hope everyone gets their issues resolved
I’m using an old (Mid-2010) running Mohave Mac Pro 5,1. I was devastated when I read the minimum Mac OS was 11. But so far everything is working perfectly. I would have thought a system below the minimum spec would have issues and the newer Macs would not have as many issues.
I am stoked to have this working. I hope the rest of you that are having issues get them sorted quickly! Thanx to NDSP for getting this done. It is already making a huge impact on my workflow!
I might try changing the resolution on my monitor temporarily (using the graphics card’s utility or Windows settings) until they get the scaling working properly in Cortex Control. Maybe at least you will be able to move the Cortex Control window down and perhaps even switch back to your normal resolution afterwards, if the window position is sticky.
Same USB issue here on Mac Mini M1 and MacBook Air M1, both running OS X Sonoma. QC isn’t recognized as audio interface and Cortex Control doesn’t connect.
However, it worked for a few hours before. I played around with the desktop editor and did some captures. But suddenly no chance connecting via USB anymore.
pretty sure this is a mac issue and not a corOs usb issue, everyone in this thread is mac. try an always reliable pc instead 
I have the MacBook Air M1 on the latest software and no issues. I am even using a usb hub. So it seems to be a specific problem, not a general one with Apple.
My 27" 2015 iMac running Monterey 12.7 worked with it 2nd time; it froze at first as some have complained about, so I unplugged the USB from the back of the QC, plugged it back in, and it’s been working fine since. Pretty slick, actually! Hope it stays that way. This will be fun…
OK, well I took some time away, came back, and frozen again. Unplugged and plugged the usb cord back in, it works fine again. Definitely seems like a bug…
If at all possible, please use the support button within the editor and or email support@neuraldsp.com so they can log the issue and hopefully provide resolution.
@MP_Mod Logged with Support and ongoing conversation, but no solution so far.
Signed up for this forum just to say that I have been having the exact same issue. Prior to the latest update, my QC was working fine with my Mac via USB and the Cortex Control app was fine.
Since updating to 2.2.2, it now does not connect to my Mac full stop - tried different cables, resetting, turning on and off again etc and it does not want to cooperate. Really frustrating but kinda comforting to see that it’s not just me who is finding these errors, so hope it gets fixed really soon.
None of the updates to both the QC itself or the Desktop controller makes a difference. My unit is flying off back home to Finland for a look over in a couple of days, so hopefully that will shine some light on the issue.
Please ensure you have updated the software for the editor as it was updated for the CoreOS release.
I have the latest update of the CoreOS and also the latest Cortex Control.
I’ve spent more time troubleshooting and twisting knobs on this Quad Cortex over the past 3 months than I have in my entire 20 year career of playing music compared to tube amps.
Still the same problem even after todays update…
agreed - its still not working for me. I’ve tried several USB hubs (Apple and 3rd party) with no consistent success. In order to go direct into my MacBook Pro I would have to buy a USB-B to USB-C cable as my laptop only has those ports.
Has anyone else already tried that type of USB-B to USB-C cable with any success?
I have bought the direct cable and no change, still not working.