http://www.beautiful.st/ example website is not working.

[aplannersguide]

Seeing the following error when trying to view the example website.

DatabaseError at /
permission denied for relation django_session
Request Method: GET
Request URL:    http://www.beautiful.st/
Django Version: 1.4
Exception Type: DatabaseError
Exception Value:    
permission denied for relation django_session
Exception Location: /app/.heroku/python/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py in execute, line 52
Python Executable:  /app/.heroku/python/bin/python
Python Version: 2.7.3
Python Path:    
['/app/street_score',
 '/app/.heroku/python/lib/python2.7/site-packages/distribute-0.6.34-py2.7.egg',
 '/app/.heroku/python/lib/python2.7/site-packages/pip-1.1-py2.7.egg',
 '/app',
 '/app/.heroku/python/lib/python27.zip',
 '/app/.heroku/python/lib/python2.7',
 '/app/.heroku/python/lib/python2.7/plat-linux2',
 '/app/.heroku/python/lib/python2.7/lib-tk',
 '/app/.heroku/python/lib/python2.7/lib-old',
 '/app/.heroku/python/lib/python2.7/lib-dynload',
 '/app/.heroku/python/lib/python2.7/site-packages',
 '/app/.heroku/python/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg-info']
Server time:    Wed, 4 Dec 2013 09:44:17 -0600