diff --git a/classes/Language.php b/classes/Language.php
index a7f8b8ae0..c54d122d0 100644
--- a/classes/Language.php
+++ b/classes/Language.php
@@ -767,6 +767,48 @@ class LanguageCore extends ObjectModel
 		return self::$countActiveLanguages;
 	}
 
+	public static function downloadAndInstallLanguagePack($iso, $version)
+	{
+		require_once(_PS_TOOL_DIR_.'tar/Archive_Tar.php');
+
+		if (!Validate::isLanguageIsoCode($iso))
+			return false;
+		
+		$lang_pack_ok = false;
+		$errors = array();
+		$file = _PS_TRANSLATIONS_DIR_.$iso.'.gzip';
+		if (!$lang_pack_link = Tools::file_get_contents('http://www.prestashop.com/download/lang_packs/get_language_pack.php?version='._PS_VERSION_.'&iso_lang='.$iso))
+			$errors[] = Tools::displayError('Archive cannot be downloaded from prestashop.com.');
+		elseif (!$lang_pack = Tools::jsonDecode($lang_pack_link))
+			$errors[] = Tools::displayError('Error occurred when language was checked according to your Prestashop version.');
+		elseif ($content = Tools::file_get_contents('http://translations.prestashop.com/download/lang_packs/gzip/'.$version.'/'.$iso.'.gzip'))
+			if (!is_writable($file) || !file_put_contents($file, $content))
+				$errors[] = Tools::displayError('Server does not have permissions for writing.');
+		if (file_exists($file))
+		{
+			$gz = new Archive_Tar($file, true);
+			$files_list = $gz->listContent();
+			if (!$gz->extract(_PS_TRANSLATIONS_DIR_.'../', false))
+			{
+				$errors[] = Tools::displayError('Cannot decompress the translation file for the following language: ').(string)$iso;
+				return false;
+			}
+			else
+			{
+				AdminTranslationsController::checkAndAddMailsFiles($iso, $files_list);
+				AdminTranslationsController::addNewTabs($iso, $files_list);
+			}
+			if (!Language::checkAndAddLanguage((string)$iso, $lang_pack))
+			{
+				$errors[] = Tools::displayError('An error occurred while creating the language: ').(string)$iso;
+				return false;
+			}
+			@unlink($file);
+		}
+
+		return count($errors) ? $errors : true;
+	}
+
 	/**
 	 * Check if more on than one language is activated
 	 *
diff --git a/classes/LocalizationPack.php b/classes/LocalizationPack.php
index 02998ed00..442c1f8bd 100644
--- a/classes/LocalizationPack.php
+++ b/classes/LocalizationPack.php
@@ -296,40 +296,9 @@ class LocalizationPackCore
 				if (Language::getIdByIso($attributes['iso_code']) && !$install_mode)
 					continue;
 
-				$errno = 0;
-				$errstr = '';
-				if (!$lang_pack_link = Tools::file_get_contents('http://www.prestashop.com/download/lang_packs/get_language_pack.php?version='._PS_VERSION_.'&iso_lang='.$attributes['iso_code']))
-					$this->_errors[] = Tools::displayError('Archive cannot be downloaded from prestashop.com.');
-				elseif (!$lang_pack = Tools::jsonDecode($lang_pack_link))
-					$this->_errors[] = Tools::displayError('Error occurred when language was checked according to your Prestashop version.');
-				elseif ($content = Tools::file_get_contents('http://translations.prestashop.com/download/lang_packs/gzip/'.$lang_pack->version.'/'.$attributes['iso_code'].'.gzip'))
-				{
-					$file = _PS_TRANSLATIONS_DIR_.$attributes['iso_code'].'.gzip';
-					if (file_put_contents($file, $content))
-					{
-						$gz = new Archive_Tar($file, true);
-						$files_list = $gz->listContent();
-
-						if (!$gz->extract(_PS_TRANSLATIONS_DIR_.'../', false))
-						{
-							$this->_errors[] = Tools::displayError('Cannot decompress the translation file for the following language: ').(string)$attributes['iso_code'];
-							return false;
-						}
-						else
-						{
-							AdminTranslationsController::checkAndAddMailsFiles($attributes['iso_code'], $files_list);
-							AdminTranslationsController::addNewTabs($attributes['iso_code'], $files_list);
-						}
-						if (!Language::checkAndAddLanguage((string)$attributes['iso_code'], $lang_pack))
-						{
-							$this->_errors[] = Tools::displayError('An error occurred while creating the language: ').(string)$attributes['iso_code'];
-							return false;
-						}
-						@unlink($file);
-					}
-					else
-						$this->_errors[] = Tools::displayError('Server does not have permissions for writing.');
-				}
+				$errors = Language::downloadAndInstallLanguagePack($attributes['iso_code'], $attributes['version']);
+				if ($errors !== true && is_array($errors))
+					$this->_errors = array_merge($this->_errors, $errors);
 			}
 		// change the default language if there is only one language in the localization pack
 		if (!count($this->_errors) && $install_mode && isset($attributes['iso_code']) && count($xml->languages->language) == 1)
diff --git a/install-dev/models/install.php b/install-dev/models/install.php
index 63d08a8fd..b0d7fa986 100644
--- a/install-dev/models/install.php
+++ b/install-dev/models/install.php
@@ -307,6 +307,8 @@ class InstallModelInstall extends InstallAbstractModel
 			if (!$xml = @simplexml_load_file(_PS_INSTALL_LANGS_PATH_.$iso.'/language.xml'))
 				throw new PrestashopInstallerException($this->language->l('File "language.xml" not valid for language iso "%s"', $iso));
 
+			Language::downloadAndInstallLanguagePack($iso, _PS_INSTALL_VERSION_);
+
 			// Add language in database
 			$language = new Language();
 			$language->iso_code = $iso;