Comment 4 for bug 1176151

my devstack installation script has suddenly stopped working - when I attempt to manually start keystone with

 cd /opt/stack/keystone && /opt/stack/keystone/bin/keystone-all --config-file /etc/keystone/keystone.conf --log-config /etc/keystone/logging.conf -d --debug || touch "/opt/stack/status/stack/key.failure"

(which fails with devstack) I get IOError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/prettytable-0.7.2.egg-info/top_level.txt'