Install JDK 8 or greater on your Mac. Make sure that your JAVA_HOME environment variable is pointing to Java JDK 8 installation (howto) OR that Java JDK 8 is set as the default Java runtime for launching Java JAR files.
Make sure that you have Java 8u172 or higher (but needs to be Java 8) as default Java software. You can do this by typing java -version in the terminal.
% java -version java version "1.8._____" Java(TM) SE Runtime Environment (build 1.7.0_06-ea-b13) Java HotSpot(TM) 64-Bit Server VM (build 23.2-b04, mixed mode)
You also need to have JavaFX installed. If you have Oracle's Java, it is already included in the standard installation.
Download MCreator's ZIP file for Mac and Linux and extract it to the preferred folder. We recommend you to use separate folders for each MCreator installation.
Click on the MCreator.jar file to run MCreator. Wait until MCreator completes the initial setup. This might take 10 - 20 minutes. If something goes wrong, don't hesitate to contact us to help you fix your bug.