Django / mod_wsgi OSError：[Errno 13]权限被拒绝：当DEBUG = OFF时'静态'

I have a Django 1.4 application on a Centos 6.2 server (running apache, mysql, php) using mod_wsgi with my project deployed in a virtual env. The application itself is one I've been using for several years on a hosted service and I am now deploying on my own rackspace cloud server. The exact version of the app is running fine elsewhere, so this issue is about how I have deployed it. It's my first python/django deployment - I have set up dozens of LAMP sites previously, so it's my lack of familiarity with Django deployments that is clearly holding me back.I have a Django 1.4 application on a Centos 6.2