Moose 3.02 in Mac "Cannot access /usr/share/doc/moose"

Created by: YubinXie

Hi When I open moosegui in Mac OS 10.11, this error comes out.

[INFO] PYTHONPATH aleady contains /Volumes/Moose_3.0.2/lib/python2.7/site-packages Could not access Demos directory: /usr/share/doc/moose [Errno 13] Cannot access /usr/share/doc/moose

I used sudo chown -R but it could not change the permission. Is this a big problem?