by Pierre Guilluy » Tue Oct 27, 2020 10:57 am
Modul8 isn't macOS Big Sur compatible.
We're in the process of fixing some issues, but debugging those requires a lot of changes in the development environment, so we're not sure yet when an update will be ready.
In a general manner, we strongly advice against updating to a new OS version on day one, and until the critical softwares you're using are declared compatible.
If you want to give the OS a try, I would suggest installing the new OS version on a separate partition, or better on an external disk.