How to debug protractor in Intellij?

In OSX, I have configured an Intellij 15 run/debug task as in this question:

How to debug angular protractor tests in WebStorm

It runs ok but debug doesn't work. It throws:

/usr/local/bin/node --debug-brk=60144 --nolazy /usr/local/lib/node_modules/protractor/lib/cli.js /Users/XXXX/Workspace/frontend-test/config.js
Debugger listening on port 60144
Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver

Process finished with exit code 139

Any idea?

Thanks in advance.