After upgrading to macOS 27, your LDK dongle (HardKey license) may not be recognized, and IMC may fall back to a software key license instead. This happens because Rosetta 2 - the compatibility layer that runs Intel-built software on Apple Silicon - is not installed by default on macOS 27.
If your dongle is not recognized, install Rosetta 2 as follows:
- Open the Terminal app
- Run the following command:
softwareupdate --install-rosetta --agree-to-license - Restart IMC