diff --git a/install/lang/eu/admin.php b/install/lang/eu/admin.php
index 51e908ce295..e751feee82e 100644
--- a/install/lang/eu/admin.php
+++ b/install/lang/eu/admin.php
@@ -39,5 +39,5 @@ $string['clitypevaluedefault'] = 'sartu balorea, sakatu Enter-i berezko balorea
 $string['cliunknowoption'] = 'Aukera ezezagunak:{$a}
 Mesedez, erabili --laguntza aukera.';
 $string['cliyesnoprompt'] = 'idatzi b (bai esateko) edo e (ez esateko)';
-$string['environmentrequireinstall'] = 'derrigorrezkoa da instalatuta etagaituta izatea';
+$string['environmentrequireinstall'] = 'derrigorrezkoa da instalatuta eta gaituta izatea';
 $string['environmentrequireversion'] = '{$a->needed} bertsioa beharrezkoa da eta zu {$a->current} ari zara egikaritzen';
diff --git a/install/lang/ga/error.php b/install/lang/ga/error.php
new file mode 100644
index 00000000000..3655f094581
--- /dev/null
+++ b/install/lang/ga/error.php
@@ -0,0 +1,48 @@
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Automatically generated strings for Moodle installer
+ *
+ * Do not edit this file manually! It contains just a subset of strings
+ * needed during the very first steps of installation. This file was
+ * generated automatically by export-installer.php (which is part of AMOS
+ * {@link http://docs.moodle.org/dev/Languages/AMOS}) using the
+ * list of strings defined in /install/stringnames.txt.
+ *
+ * @package   installer
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$string['cannotcreatelangdir'] = 'Ní féidir eolaire teanga a chruthú';
+$string['cannotcreatetempdir'] = 'Ní féidir eolaire sealadach a chruthú';
+$string['cannotdownloadcomponents'] = 'Ní féidir na comhphairteanna a íoslódáil';
+$string['cannotdownloadzipfile'] = 'Ní féidir comhad ZIP a íoslódáil';
+$string['cannotfindcomponent'] = 'Ní féidir teacht ar chomhpháirt';
+$string['cannotsavemd5file'] = 'Ni féidir an comhad md5 a shábháil';
+$string['cannotsavezipfile'] = 'Ni féidir an comhad ZIP a shábháil';
+$string['cannotunzipfile'] = 'Ní féidir an comhad a dhízipeáil';
+$string['componentisuptodate'] = 'Tá an chomhpháirt suas chun dáta';
+$string['downloadedfilecheckfailed'] = 'Theip ar an seiceáil comhaid íoslódailte';
+$string['invalidmd5'] = 'Bhí "an athróg seiceála mícheart – triail arís é';
+$string['missingrequiredfield'] = 'Réimse riachtanach ar iarraidh';
+$string['remotedownloaderror'] = 'Theip ar íoslódail comhpháirte chuig do fhreastalaí, dearbhaigh seachshocruithe moltar iarmhíreanna , PHP cURL go hard.<br /"><br />Y Caithfidh tú an comhad <a href="""{$a->url}"">{$a->url}</a> a íoslódáil de láimh';
+$string['wrongdestpath'] = 'Cosán sprice mícheart';
+$string['wrongsourcebase'] = 'Foinse mícheart do bhunachar URL';
+$string['wrongzipfilename'] = 'Ainm mícherat comhaid ZIP';
diff --git a/install/lang/pl/install.php b/install/lang/pl/install.php
index 28adfbc8e43..22d60fc4158 100644
--- a/install/lang/pl/install.php
+++ b/install/lang/pl/install.php
@@ -41,6 +41,7 @@ $string['dataroot'] = 'Katalog z danymi';
 $string['dbprefix'] = 'Prefiks tabel';
 $string['dirroot'] = 'Katalog Moodle';
 $string['environmenthead'] = 'Sprawdzam środowisko (ustawienia) ...';
+$string['environmentsub2'] = 'Każde wydanie Moodle ma pewne minimalne wymagania wersji PHP i pewną liczbę obowiązkowych rozszerzeń PHP. Pełna kontrola środowiska odbywa się przed każdą instalacją i aktualizacją. Prosimy o kontakt z administratorem serwera, jeśli nie wiesz jak zainstalować nową wersję lub włączyć rozszerzenie PHP.';
 $string['errorsinenvironment'] = 'Kontrola środowiska zakończona niepowodzeniem!';
 $string['installation'] = 'Instalacja';
 $string['langdownloaderror'] = 'Niestety język "{$a}" nie może zostać pobrany. Proces instalacji będzie kontynuowany w języku angielskim.';
diff --git a/install/lang/ru/install.php b/install/lang/ru/install.php
index bc069683e06..e16259e7529 100644
--- a/install/lang/ru/install.php
+++ b/install/lang/ru/install.php
@@ -40,6 +40,7 @@ $string['databasehost'] = 'Сервер баз данных';
 $string['databasename'] = 'Название базы данных';
 $string['databasetypehead'] = 'Выберите драйвер базы данных';
 $string['dataroot'] = 'Каталог данных';
+$string['datarootpermission'] = 'Разрешения на каталоги данных';
 $string['dbprefix'] = 'Префикс имён таблиц';
 $string['dirroot'] = 'Каталог Moodle';
 $string['environmenthead'] = 'Проверка среды...';