Omeka has encountered an error

Zend_Form_Exception

Method setSubmitButtonText does not exist

exception 'Zend_Form_Exception' with message 'Method setSubmitButtonText does not exist' in /var/www/html/omeka-2.2.2/application/libraries/Zend/Form.php:3264
Stack trace:
#0 /var/www/html/omeka-2.2.2/plugins/GuestUser/controllers/UserController.php(31): Zend_Form->__call('setSubmitButton...', Array)
#1 /var/www/html/omeka-2.2.2/plugins/GuestUser/controllers/UserController.php(31): Omeka_Form_User->setSubmitButtonText('Register')
#2 /var/www/html/omeka-2.2.2/application/libraries/Zend/Controller/Action.php(516): GuestUser_UserController->registerAction()
#3 /var/www/html/omeka-2.2.2/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('registerAction')
#4 /var/www/html/omeka-2.2.2/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#5 /var/www/html/omeka-2.2.2/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch()
#6 /var/www/html/omeka-2.2.2/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run()
#7 /var/www/html/omeka-2.2.2/application/libraries/Omeka/Application.php(77): Zend_Application->run()
#8 /var/www/html/omeka-2.2.2/index.php(23): Omeka_Application->run()
#9 {main}