Cannot Send Bulk Email via Find Members

Looks like the same issue as CRM-3866 but for Find Members. Replicated on drupal.demo.civicrm.org

To replicate:

---

FInd Members -> Search
Select contacts, choose Send Email to Contacts
Enter subject & text
Send

Result:

---

backTrace

/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/CRM/Core/Error.php, backtrace, 138
, handle,
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/packages/PEAR.php, call_user_func, 912
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/packages/PEAR.php, PEAR_Error, 576
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/packages/HTML/QuickForm/Controller.php, raiseError, 217
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/packages/HTML/QuickForm/Page.php, handle, 103
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/CRM/Core/Controller.php, handle, 232
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/CRM/Core/Invoke.php, run, 197
/var/www/drupal-6.civicrm.org/public/sites/drupal.demo.civicrm.org/modules/civicrm/drupal/civicrm.module, invoke, 315
, civicrm_invoke,
/var/www/drupal-6.civicrm.org/public/includes/menu.inc, call_user_func_array, 348
/var/www/drupal-6.civicrm.org/public/index.php, menu_execute_active_handler, 18

---

Sorry. A non-recoverable error has occurred.

HTML_QuickForm_Controller: Unhandled action "upload" in page "Email"

---

Error Details:

Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] =>
[message] => HTML_QuickForm_Controller: Unhandled action "upload" in page "Email"
[mode] => 16
[debug_info] =>
[type] => PEAR_Error
[user_info] =>
[to_string] => [pear_error: message="HTML_QuickForm_Controller: Unhandled action "upload" in page "Email"" code=0 mode=callback callback=CRM_Core_Error::handle prefix="" info=""]
)