The Isle I-1 is available as an Apple Audio Unit (AU). Download the Isle I-1 dmg file from the link below -- to install, open the dmg file, then drag the Isle I-1.app file into the shortcut to your Applications folder. You will also need a license code -- to obtain one, register on our Patreon page: Isle Synths. Once you have your license code, right-click on the .app file in the Applications folder, select Show Contents, open the Resources folder, and drop your license.dat file there. Your application should now start without any error messages. Happy noisemaking!