After the wait for a Big Sur driver for the UR-C, I installed it on my 2019 MacBook Pro running macOS 11.2.3. Yay, my interface works again …until it doesn’t. After a couple of hours of continuous use (which appears to mean one of my applications streaming audio through it or with dspMixFX running), the kernel panics and the system restarts.
Has anyone else seen this? I sent an email to the support address and didn’t get anything back, even an auto-reply.
The post-mortem (which I can provide if needed) that comes after a crash like this shows that the Steinberg driver is involved. The error was a page fault, and I ran a diagnostic to make sure it wasn’t RAM going bad, which sometimes causes those.