Cannot add a new connection (no replies)

Hi,

I am a complete beginner to SQL and so I decided to download workbench and follow the tutorial.

The problem shows up at the very beginning. If I click on the [+] button on the home screen, nothing happens. I've not been able to find any information about this.

Is this a bug? I am using OS X 10.9.5 and the 6.3.9 version of the workbench.

Thanks! (and apologies if the question is trivial)