HardwareSimulator Errors on start

Posted by calderete on Apr 15, 2019; 7:53pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/HardwareSimulator-Errors-on-start-tp4033082.html

When trying to start the HardwareSimulator I'm getting

"Error: Unable to initialize main class HardwareSimulatorMain"
"Caused by: java.lang.NoClassDefFoundError: Hack/HardwareSimulator/HardwareSimulatorControllerGUI"

Im on mac OS X Mojave. The results of java -version is

java version "11.0.1" 2018-10-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.1+13-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.1+13-LTS, mixed mode)

Any help would be much appreciated!