Im trying to create a multi step form. The first step works fine, but after pressing next, I get a no content underneath the title.

Anyone familiar with this module can see any code errors?

<?php

class CSVWizard extends Page {
}

class CSVWizard_Controller extends Page_Controller {
   private static $allowed_actions = array('index', 'CSVWizard');
   public function index(SS_HTTPRequest $request) {
        $this->Content = $this->CSVWizardForm();
        return $this->render();
   }
   public function CSVWizardForm() {
        return new CSVWizardMultiForm($this, 'CSVWizard');
   }
   function finished() {
      return array(
         'Title' => 'Thank you for your submission',
         'Content' => "<p>You have successfully submitted the form!</p>"
      );
   }
}

class CSVWizardMultiForm extends MultiForm {
   public static $start_step = 'CSVSelectFile';
}

class CSVSelectFile extends MultiFormStep {
   public static $next_steps = 'CSVSelectSchema';
   function getFields() {
     return new FieldList(
       new TextField('directory', 'Directory'),
       new TextField('filePattern', 'File Pattern')
     );
   }
}

class CSVSelectSchema extends MultiFormStep {
   public static $next_steps = 'CSVUpdateTask';
   function getFields() {
     return new FieldList(
       new TextField('style', 'Style'),
       new TextField('header', 'Header')
     );
   }
}

class CSVUpdateTask extends MultiFormStep {
   public static $is_final_step = true;
}