Setting symfony web root dynamically

class ProjectConfiguration extends sfProjectConfiguration
{
public function setup()
{
$this->setWebDir($this->getRootDir().DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.basename($_SERVER['DOCUMENT_ROOT']));

//$this->enableAllPluginsExcept(array('sfDoctrinePlugin', 'sfCompat10Plugin'));
$this->enableAllPluginsExcept(array('sfCompat10Plugin'));
}
}

Option "--theme" requires an argument

Getting this?

The execution of task "propel:generate-crud" failed.
- Option "--theme" requires an argument.
- Too many arguments ("propel:generate-crud app module class yourcustomtheme" given).

When running this?

symfony propel:generate-crud backend module class --non-atomic-actions --non-verbose-templates --theme=yourcustomtheme

Try:

symfony propel:generate-crud backend module class --non-atomic-actions --non-verbose-templates "--theme=yourcustomtheme"