When using HP-UX the pmjoin_plugin fails to work properly failing to join with the following errors:
sudo: error in /etc/sudo.conf, line 4 while loading plugin "privilege_manager_policy_plugin"
sudo: unable to load /opt/quest/libexec/qpm4u_plugin.sl: '/opt/quest/libexec/qpm4u_plugin.sl' is not a valid load module: Bad magic number
sudo: fatal error, unable to load plugins