Fixes issue with Mac bundles and 3Dconnexion drivers
Created by: ianrrees
Some discussion on http://forum.freecadweb.org/viewtopic.php?f=10&t=13341 around post ~85
Created by: ianrrees
Some discussion on http://forum.freecadweb.org/viewtopic.php?f=10&t=13341 around post ~85