diff --git a/admin-dev/themes/default/template/controllers/localization/content.tpl b/admin-dev/themes/default/template/controllers/localization/content.tpl
index 3fefc850d..4515293f5 100644
--- a/admin-dev/themes/default/template/controllers/localization/content.tpl
+++ b/admin-dev/themes/default/template/controllers/localization/content.tpl
@@ -24,9 +24,9 @@
 *}
 
 <div class="width4">
-	{$localization_form}
+	{if isset($localization_form)}{$localization_form}{/if}
 </div>
 <br />
 <div class="width4">
-	{$localization_options}
+	{if isset($localization_options)}{$localization_options}{/if}
 </div>
\ No newline at end of file
diff --git a/classes/Language.php b/classes/Language.php
index 786ed75a6..8aa65596d 100644
--- a/classes/Language.php
+++ b/classes/Language.php
@@ -111,18 +111,22 @@ class LanguageCore extends ObjectModel
 		$iso_code = $newIso ? $newIso : $this->iso_code;
 
 		if (!file_exists(_PS_TRANSLATIONS_DIR_.$iso_code))
-			mkdir(_PS_TRANSLATIONS_DIR_.$iso_code);
+		{
+			if (@mkdir(_PS_TRANSLATIONS_DIR_.$iso_code))
+				@chmod(_PS_TRANSLATIONS_DIR_.$iso_code, 0777);
+		}
+
 		foreach ($this->translationsFilesAndVars as $file => $var)
 		{
 			$path_file = _PS_TRANSLATIONS_DIR_.$iso_code.'/'.$file.'.php';
 			if (!file_exists($path_file))
 				if ($file != 'tabs')
-					file_put_contents($path_file, '<?php
+					@file_put_contents($path_file, '<?php
 	global $'.$var.';
 	$'.$var.' = array();
 ?>');
 				else
-					file_put_contents($path_file, '<?php
+					@file_put_contents($path_file, '<?php
 	$'.$var.' = array();
 	return $'.$var.';
 ?>');
@@ -784,13 +788,22 @@ class LanguageCore extends ObjectModel
 		$lang_pack_ok = false;
 		$errors = array();
 		$file = _PS_TRANSLATIONS_DIR_.$iso.'.gzip';
+
 		if (!$lang_pack_link = Tools::file_get_contents('http://www.prestashop.com/download/lang_packs/get_language_pack.php?version='.$version.'&iso_lang='.Tools::strtolower($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/'.$lang_pack->version.'/'.Tools::strtolower($lang_pack->iso_code.'.gzip')))
 			if (!@file_put_contents($file, $content))
-				$errors[] = Tools::displayError('Server does not have permissions for writing.');
+			{
+				if (is_writable(dirname($file)))
+				{
+					@unlink($file);
+					@file_put_contents($file, $content);
+				}
+				elseif (!is_writable($file))
+					$errors[] = Tools::displayError('Server does not have permissions for writing.').' ('.$file.')';
+			}
 		if (file_exists($file))
 		{
 			$gz = new Archive_Tar($file, true);
diff --git a/classes/controller/AdminController.php b/classes/controller/AdminController.php
index 0508ecaab..4064aca38 100644
--- a/classes/controller/AdminController.php
+++ b/classes/controller/AdminController.php
@@ -726,6 +726,8 @@ class AdminControllerCore extends Controller
 	 */
 	public function processAdd()
 	{
+		if (!isset($this->className) || empty($this->className))
+			return false;
 		/* Checking fields validity */
 		$this->validateRules();
 		if (count($this->errors) <= 0)
@@ -1142,6 +1144,8 @@ class AdminControllerCore extends Controller
 	 */
 	protected function loadObject($opt = false)
 	{
+		if (!isset($this->className) || empty($this->className))
+			return true;
 		$id = (int)Tools::getValue($this->identifier);
 		if ($id && Validate::isUnsignedId($id))
 		{
@@ -2400,7 +2404,7 @@ class AdminControllerCore extends Controller
 	public function getFieldValue($obj, $key, $id_lang = null)
 	{
 		if ($id_lang)
-			$default_value = ($obj->id && isset($obj->{$key}[$id_lang])) ? $obj->{$key}[$id_lang] : false;
+			$default_value = (isset($obj->id) && $obj->id && isset($obj->{$key}[$id_lang])) ? $obj->{$key}[$id_lang] : false;
 		else
 			$default_value = isset($obj->{$key}) ? $obj->{$key} : false;
 
diff --git a/controllers/admin/AdminLocalizationController.php b/controllers/admin/AdminLocalizationController.php
index c5158f9fa..882ad4e5e 100644
--- a/controllers/admin/AdminLocalizationController.php
+++ b/controllers/admin/AdminLocalizationController.php
@@ -28,9 +28,6 @@ class AdminLocalizationControllerCore extends AdminController
 {
 	public function __construct()
 	{
-		$this->className = 'Configuration';
-		$this->table = 'configuration';
-
 		parent::__construct();
 
 		$this->fields_options = array(
diff --git a/controllers/admin/AdminTranslationsController.php b/controllers/admin/AdminTranslationsController.php
index 9766e356b..52b178edc 100644
--- a/controllers/admin/AdminTranslationsController.php
+++ b/controllers/admin/AdminTranslationsController.php
@@ -581,7 +581,9 @@ class AdminTranslationsControllerCore extends AdminController
 			if (preg_match('#^translations\/'.$iso_code.'\/tabs.php#Ui', $file['filename'], $matches) && Validate::isLanguageIsoCode($iso_code))
 			{
 				// Include array width new translations tabs
-				$tabs = include _PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file['filename'];
+				$tabs = array();
+				if (Tools::file_exists_cache(_PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file['filename']))
+					$tabs = include_once(_PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file['filename']);
 
 				foreach ($tabs as $class_name => $translations)
 				{