Regarding macOS Catalina, the installation of newly-released macOS updates and their compatibility with Capture One

Capture One 12.1.4 is the first release to support macOS 10.15 Catalina. It has been tested and is supported up to macOS 10.15.1. If you are running 12.1.3 or earlier, it's advisable to update to 12.1.4.

When Apple releases a major update to their operating system, e.g. macOS 10.15 (Catalina), it can be very tempting to download and install these updates right away.

We strongly advise against this for several reasons:

- The OS itself can contain bugs which can hinder your workflow drastically
- This also applies to any hardware/cameras you may be using with Capture One. For instance, with Mac OS 10.11 (El Capitan) tethering was completely broken by the new OS

You may find that the application runs on an unsupported operating system, but we cannot guarantee this, due to it being untested. If you must have macOS Catalina installed, it is highly recommended that you update to version 12.1.4 (available from our download page), then test your workflow end-to-end before putting it into a mission-critical production environment.