diff --git a/install/lang/az/moodle.php b/install/lang/az/moodle.php
index 23f75ae4acc..6a5dc95fd08 100644
--- a/install/lang/az/moodle.php
+++ b/install/lang/az/moodle.php
@@ -31,3 +31,6 @@
 defined('MOODLE_INTERNAL') || die();
 
 $string['language'] = 'Dil';
+$string['next'] = 'Növbəti';
+$string['previous'] = 'Əvvələ';
+$string['reload'] = 'Yenilə';
diff --git a/install/lang/cy/install.php b/install/lang/cy/install.php
index 8f5d4f6a7f1..eb7eae4aceb 100644
--- a/install/lang/cy/install.php
+++ b/install/lang/cy/install.php
@@ -64,6 +64,7 @@ Os oes gan eich safle amryw o gyfeiriadau cyhoeddus, bydd rhaid i chi sefydlu ll
 Os gellir mynd i mewn i\'ch safle o\'r Rhyngrwyd a\'r Fewnrwyd, defnyddiwch y cyfeiriad cyhoeddus yma a sefydlu DNS er mwyn i ddefnyddwyr y Fewnrwyd allu defnyddio\'r cyfeiriad cyhoeddus hefyd.
 Os nad yw\'r cyfeiriad yn gywir, newidiwch yr URL yn eich porwr i ailddechrau\'r rhaglen osod gyda gwerth gwahanol.';
 $string['pathsunsecuredataroot'] = 'Dydy lleoliad y data gwraidd ddim yn ddiogel';
+$string['pathswrongadmindir'] = 'Cyfeiriadur y gweinyddwr';
 $string['phpextension'] = 'Estyniad PHP {$a}';
 $string['phpversion'] = 'Fersiwn PHP';
 $string['phpversionhelp'] = '<p>Mae angen o leiaf fersiwn PHP 4.3.0 neu 5.1.0 ar Moodle (mae llawer o broblemau gyda 5.0.x).</p>
diff --git a/install/lang/he/install.php b/install/lang/he/install.php
index 53d78df79b6..f6b75fe8bd6 100644
--- a/install/lang/he/install.php
+++ b/install/lang/he/install.php
@@ -41,6 +41,7 @@ $string['databasehost'] = 'מסד הנתונים המארח (host)';
 $string['databasename'] = 'שם מסד הנתונים';
 $string['databasetypehead'] = 'בחר התקן מסד הנתונים';
 $string['dataroot'] = 'ספריית הנתונים';
+$string['datarootpermission'] = 'הרשאות תיקיות bתונים (data)';
 $string['dbprefix'] = 'Tables prefix';
 $string['dirroot'] = 'ספריית ה-Moodle';
 $string['environmenthead'] = 'בודק את הסביבה שלך...';
diff --git a/install/lang/tt/langconfig.php b/install/lang/tt/langconfig.php
new file mode 100644
index 00000000000..1720fd10d43
--- /dev/null
+++ b/install/lang/tt/langconfig.php
@@ -0,0 +1,33 @@
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Automatically generated strings for Moodle 2.1 installer
+ *
+ * Do not edit this file manually! It contains just a subset of strings
+ * needed during the very first steps of installation. This file was
+ * generated automatically by export-installer.php (which is part of AMOS
+ * {@link http://docs.moodle.org/dev/Languages/AMOS}) using the
+ * list of strings defined in /install/stringnames.txt.
+ *
+ * @package   installer
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$string['thislanguage'] = 'татар теле';