Webform Encrypt module breaks mail sending when encrypted field is optional and submitted with empty value

Found the same problem but on the 1.0 version. Just added an if entry value ! empty based off the aforementioned patch.

Line 71:

function webform_encrypt_webform_submission_render_alter(&$renderable) {
  foreach ($renderable['#submission']->data as $cid => $entry) {
    if (isset($renderable['#node']->webform['components'][$cid]['extra']['encrypt']) &&
        $renderable['#node']->webform['components'][$cid]['extra']['encrypt']) {
      $form_key = $renderable['#node']->webform['components'][$cid]['form_key'];
      // check that the value is set
      if (!empty($entry['value'][0])) {
        if (user_access('view encrypted values')) {
          $renderable[$form_key]['#value'] = decrypt($entry['value'][0], array('base64' => TRUE));
        } else {
          $renderable[$form_key]['#value'] = t('[Value Encrypted]');
        }
      }
    }
  }
}

Patch above was not applying cleanly for me against 1.x-dev, have attached another patch re-rolled against the latest dev.

Re-roll :)

Thanks for the patch!
Could you please expand the description of this issue so it's easier to understand and duplicate the error?

another re-roll for latest 7.x-1.x dev. Seems that part of this was fixed previously.

Thanks for the reroll @joseph.olstad

I believe this makes sense regardless of the original issue still being valid, so I've gone ahead and committed it.

Please feel free to reopen if the original issue is still happening.