Error: SQLSTATE[HY093]: Invalid parameter number: no parameters were bound

#0 /home/rhysworl/public_html/library/Zend/Db/Statement.php(283): Zend_Db_Statement_Pdo->_execute(Array)
#1 /home/rhysworl/public_html/library/Zend/Db/Adapter/Abstract.php(464): Zend_Db_Statement->execute(Array)
#2 /home/rhysworl/public_html/library/Zend/Db/Adapter/Pdo/Abstract.php(232): Zend_Db_Adapter_Abstract->query(Object(Zend_Db_Table_Select), Array)
#3 /home/rhysworl/public_html/library/Zend/Db/Table/Abstract.php(1393): Zend_Db_Adapter_Pdo_Abstract->query(Object(Zend_Db_Table_Select))
#4 /home/rhysworl/public_html/library/Zend/Db/Table/Abstract.php(1212): Zend_Db_Table_Abstract->_fetch(Object(Zend_Db_Table_Select))
#5 /home/rhysworl/public_html/application/models/News.php(169): Zend_Db_Table_Abstract->fetchAll(Object(Zend_Db_Table_Select))
#6 /home/rhysworl/public_html/application/controllers/NewsindexController.php(67): News->getMonthIndex('2008', NULL)
#7 /home/rhysworl/public_html/library/Zend/Controller/Action.php(512): NewsIndexController->indexAction()
#8 /home/rhysworl/public_html/library/Zend/Controller/Dispatcher/Standard.php(288): Zend_Controller_Action->dispatch('indexAction')
#9 /home/rhysworl/public_html/library/Zend/Controller/Front.php(945): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#10 /home/rhysworl/public_html/application/bootstrap.php(140): Zend_Controller_Front->dispatch()
#11 /home/rhysworl/public_html/inloughborough.com/index.php(30): Bootstrap->runApp()
#12 {main}