On MacOS create a shell script with your favourite text editor (i.e.myBluerenderShellScript.sh). Copy the text below into it:   #!/bin/sh
export JAVA_HOME="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home"
java -cp "bin/*" bluerender.BlueRender   Save the file in your bluerender folder: After that make the file executable, so type the following in terminal (assuming you are inside the bluerender folder and the shell script you just created is there): chmod +x myBluerenderShellScript.sh   Finally you can either double click the file in Finder or you can type the following in terminal:   ./bluerender.sh