Comment 2 for bug 528354

We've seen something similar before; there seem to be Mac issues with the console window we use. You could also just pass --no-console on the command line.

Also, once you've run 'setup.py install', you'll find a 'luminoso' command. When developing, we've found it best to install after each change and run the 'luminoso' command from outside of the development directory, to help ensure that the development and installed code doesn't get confused. (We've run into issues with 'setup.py develop' in the past, but you're welcome to try that too; it it breaks, you get to keep both pieces.)