ディラック・ライブ・アクティブ・ルーム・トリートメント

The Dirac Live Processor macOS installer in version 1.7.26 and older do not support downgrades.

This means that to replace a newer installed version, you need to:

1. Fully uninstall the existing version, by following this guide.

2. Install the desired version from Software Downloads and Changelog.