Using JRE version 1.8.0_71 on OS X version 10.11.3 and having installed CoreMidi4J 0.4 I am getting a hang on the above method.

I'm trying to use CoreMidi4J to get the new https://github.com/SMerrony/EWItool2 working on OS X as it needs SysEx messages to work.

Please let me know if you need more info to diagnose the problem.

Thanks.