spot the bug.

gistfile1.js

/**
 * Imports a public key to the key server.
 * @param {!e2e.openpgp.block.TransferablePublicKey} key The ASCII
 *    armored or {e2e.openpgp.block.TransferablePublicKey} key to import.
 * @return {!e2e.async.Result.<boolean>} True if importing key is succeeded.
 */
e2e.openpgp.KeyClient.prototype.importPublicKey = function(key) {
  var uids = key.getUserIds();
  if (uids.length != 1) {
    throw new Error('Invalid user ID for key import.');
  }
  var nonce = goog.crypt.byteArrayToHex(e2e.random.getRandomBytes(16));
  var serializedKey = e2e.openpgp.asciiArmor.encode(
      'PUBLIC KEY BLOCK', key.serialize());
  return this.getOpenIdCredentials_(uids[0], nonce).addCallback(
      goog.bind(this.importKeyWithCredentials_, this, nonce, serializedKey));
};

//....

return this.keyGenerator_.generateKey(email, keyAlgo, keyLength, subkeyAlgo,
      subkeyLength, opt_keyLocation).addCallback(function(keys) {
    goog.array.forEach(keys, function(key) {
      if (key instanceof e2e.openpgp.block.TransferableSecretKey) {
        this.importKey_(email, key, this.pubKeyRing_);
        if (this.keyClient_ !== null) {
          this.keyClient_.importPublicKey(key);
        }
      } else if (key instanceof e2e.openpgp.block.TransferableSecretKey) {
        this.importKey_(email, key, this.privKeyRing_);
      }
    }, this);
  }, this);