Post-dispatch Error: invalid client 'users' (field 3)

#0 /usr/share/php5/Zend/Application/Bootstrap/BootstrapAbstract.php(665): Bootstrap->_initClient()
#1 /usr/share/php5/Zend/Application/Bootstrap/BootstrapAbstract.php(618): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource('client')
#2 /usr/share/php5/Zend/Application/Bootstrap/BootstrapAbstract.php(582): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap(NULL)
#3 /usr/share/php5/Zend/Application.php(355): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap(NULL)
#4 /var/www/pod30/public/index.php(61): Zend_Application->bootstrap()
#5 {main}