symfony generate module，显示致命错误

Hi am trying to generae module user in symfony using command
php symfony doctrine:generate-module --with-show --non-verbose-templates frontend user User

...but it shows fatal error as

Class 'UserForm' not found in /home/pushparaj/sfprojects/educonnect/lib/vendor/symfony/lib/generator/sfModelGenerator.class.php on 331

pls give proper solution for this..

Thanks in advance...

Did you build all your models? Try ./symfony doctrine:build --all-classes first.