diff --git a/classes/Cart.php b/classes/Cart.php
index 0d7e4711a..52126f604 100644
--- a/classes/Cart.php
+++ b/classes/Cart.php
@@ -2293,7 +2293,7 @@ class CartCore extends ObjectModel
 			$this->id_carrier = 0;
 			return;
 		}
-
+		Cache::clean('getContextualValue_*');
 		$delivery_option_list = $this->getDeliveryOptionList(null, true);
 
 		foreach ($delivery_option_list as $id_address => $options)
diff --git a/classes/Gender.php b/classes/Gender.php
index 63a9a65bf..62b21d471 100644
--- a/classes/Gender.php
+++ b/classes/Gender.php
@@ -66,8 +66,8 @@ class GenderCore extends ObjectModel
 
 	public function getImage($use_unknown = false)
 	{
-		if (!file_exists(_PS_GENDERS_DIR_.$this->id.'.jpg'))
-			return ($use_unknown) ?  _PS_ADMIN_IMG_.'unknown.gif' : false;
+		if (!isset($this->id) || empty($this->id) || !file_exists(_PS_GENDERS_DIR_.$this->id.'.jpg'))
+			return _THEME_GENDERS_DIR_.'Unknown.jpg';
 		return _THEME_GENDERS_DIR_.$this->id.'.jpg';
 	}
 }
\ No newline at end of file
diff --git a/classes/ObjectModel.php b/classes/ObjectModel.php
index 17ba854d6..ebe12dc1c 100644
--- a/classes/ObjectModel.php
+++ b/classes/ObjectModel.php
@@ -940,8 +940,8 @@ abstract class ObjectModelCore
 	{
 		global $_FIELDS;
 
-		if (file_exists(_PS_TRANSLATIONS_DIR_.Context::getContext()->language->iso_code.'/fields.php'))
-			include(_PS_TRANSLATIONS_DIR_.Context::getContext()->language->iso_code.'/fields.php');
+		if ($_FIELDS === null && file_exists(_PS_TRANSLATIONS_DIR_.Context::getContext()->language->iso_code.'/fields.php'))
+			include_once(_PS_TRANSLATIONS_DIR_.Context::getContext()->language->iso_code.'/fields.php');
 
 		$key = $class.'_'.md5($field);
 		return ((is_array($_FIELDS) && array_key_exists($key, $_FIELDS)) ? ($htmlentities ? htmlentities($_FIELDS[$key], ENT_QUOTES, 'utf-8') : $_FIELDS[$key]) : $field);
@@ -1596,4 +1596,4 @@ abstract class ObjectModelCore
 	{
 		$this->update_fields = $fields;
 	}
-}
+}
\ No newline at end of file
diff --git a/classes/ProductSale.php b/classes/ProductSale.php
index a14b5fc3c..53503664d 100644
--- a/classes/ProductSale.php
+++ b/classes/ProductSale.php
@@ -65,11 +65,9 @@ class ProductSaleCore
 	{
 		if ($page_number < 0) $page_number = 0;
 		if ($nb_products < 1) $nb_products = 10;
-
 		$final_order_by = $order_by;
-		if (empty($order_by) || $order_by == 'position' || $order_by = 'price') $order_by = 'sales';
-		if (empty($order_way) || $order_by == 'sales') $order_way = 'DESC';
-
+		if (is_null($order_by) || $order_by == 'position' || $order_by == 'price') $order_by = 'sales';
+		if (is_null($order_way) || $order_by == 'sales') $order_way == 'DESC';
 		$groups = FrontController::getCurrentCustomerGroups();
 		$sql_groups = (count($groups) ? 'IN ('.implode(',', $groups).')' : '= 1');
 		$interval = Validate::isUnsignedInt(Configuration::get('PS_NB_DAYS_NEW_PRODUCT')) ? Configuration::get('PS_NB_DAYS_NEW_PRODUCT') : 20;
diff --git a/classes/SpecificPriceRule.php b/classes/SpecificPriceRule.php
index e165cdba4..99b9f674d 100755
--- a/classes/SpecificPriceRule.php
+++ b/classes/SpecificPriceRule.php
@@ -280,7 +280,7 @@ class SpecificPriceRuleCore extends ObjectModel
 		$specific_price->id_currency = (int)$rule->id_currency;
 		$specific_price->id_group = (int)$rule->id_group;
 		$specific_price->from_quantity = (int)$rule->from_quantity;
-		$specific_price->price = (int)$rule->price;
+		$specific_price->price = (float)$rule->price;
 		$specific_price->reduction_type = $rule->reduction_type;
 		$specific_price->reduction = ($rule->reduction_type == 'percentage' ? $rule->reduction / 100 : (float)$rule->reduction);
 		$specific_price->from = $rule->from;
@@ -288,4 +288,4 @@ class SpecificPriceRuleCore extends ObjectModel
 
 		return $specific_price->add();
 	}
-}
+}
\ No newline at end of file
diff --git a/classes/Tools.php b/classes/Tools.php
index 06e212447..519f10dc0 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -2121,9 +2121,12 @@ exit;
 	 */
 	public static function clearCache($smarty = null, $tpl = false, $cache_id = null, $compile_id = null)
 	{
-		if (is_null($smarty))
+		if ($smarty === null)
 			$smarty = Context::getContext()->smarty;
-		
+
+		if ($smarty === null)
+			return;
+
 		if (!$tpl && $cache_id === null && $compile_id === null)
 			return $smarty->clearAllCache();
 
@@ -2456,4 +2459,3 @@ function cmpPriceDesc($a, $b)
 		return -1;
 	return 0;
 }
-
diff --git a/controllers/admin/AdminCmsController.php b/controllers/admin/AdminCmsController.php
index 00d8eb884..71497c56e 100644
--- a/controllers/admin/AdminCmsController.php
+++ b/controllers/admin/AdminCmsController.php
@@ -219,22 +219,12 @@ class AdminCmsControllerCore extends AdminController
 		/* Close list table and submit button */
 		$this->displayListFooter($token);
 	}
-
-	/**
-	 * Modifying initial getList method to display position feature (drag and drop)
-	 */
-	public function getList($id_lang, $order_by = null, $order_way = null, $start = 0, $limit = null, $id_lang_shop = false)
-	{
-		if ($order_by && $this->context->cookie->__get($this->table.'Orderby'))
-			$order_by = $this->context->cookie->__get($this->table.'Orderby');
-		else
-			$order_by = 'position';
-
-		parent::getList($id_lang, $order_by, $order_way, $start, $limit, $id_lang_shop);
-	}
-
+	
 	public function postProcess()
 	{
+		if (Tools::isSubmit($this->table.'Orderby') || Tools::isSubmit($this->table.'Orderway'))
+			$this->filter = true;
+		
 		if (Tools::isSubmit('viewcms') && ($id_cms = (int)Tools::getValue('id_cms')) && ($cms = new CMS($id_cms, $this->context->language->id)) && Validate::isLoadedObject($cms))
 		{
 			$redir = $this->context->link->getCMSLink($cms);
diff --git a/controllers/admin/AdminModulesController.php b/controllers/admin/AdminModulesController.php
index 9d516d1d9..c457c4496 100644
--- a/controllers/admin/AdminModulesController.php
+++ b/controllers/admin/AdminModulesController.php
@@ -391,6 +391,8 @@ class AdminModulesControllerCore extends AdminController
 		$this->recursiveDeleteOnDisk($tmp_folder);
 		if ($success && $redirect)
 			Tools::redirectAdmin(self::$currentIndex.'&conf=8&anchor=anchor'.ucfirst($folder).'&token='.$this->token);
+
+		return $success;
 	}
 
 	protected function recursiveDeleteOnDisk($dir)
diff --git a/controllers/admin/AdminPPreferencesController.php b/controllers/admin/AdminPPreferencesController.php
index 4cb5beedf..c3cb9a352 100644
--- a/controllers/admin/AdminPPreferencesController.php
+++ b/controllers/admin/AdminPPreferencesController.php
@@ -223,7 +223,7 @@ class AdminPPreferencesControllerCore extends AdminController
 
 	public function beforeUpdateOptions()
 	{
-		if (!Tools::getValue('PS_STOCK_MANAGEMENT'))
+		if (!Tools::getValue('PS_STOCK_MANAGEMENT', true))
 		{
 			$_POST['PS_ORDER_OUT_OF_STOCK'] = 1;
 			$_POST['PS_DISPLAY_QTIES'] = 0;
diff --git a/controllers/front/ProductController.php b/controllers/front/ProductController.php
index 989c59ee3..0938d1106 100644
--- a/controllers/front/ProductController.php
+++ b/controllers/front/ProductController.php
@@ -257,9 +257,9 @@ class ProductControllerCore extends FrontController
 				'HOOK_EXTRA_LEFT' => Hook::exec('displayLeftColumnProduct'),
 				'HOOK_EXTRA_RIGHT' => Hook::exec('displayRightColumnProduct'),
 				'HOOK_PRODUCT_OOS' => Hook::exec('actionProductOutOfStock', array('product' => $this->product)),
-				'HOOK_PRODUCT_ACTIONS' => Hook::exec('displayProductButtons'),
-				'HOOK_PRODUCT_TAB' =>  Hook::exec('displayProductTab'),
-				'HOOK_PRODUCT_TAB_CONTENT' =>  Hook::exec('displayProductTabContent'),
+				'HOOK_PRODUCT_ACTIONS' => Hook::exec('displayProductButtons', array('product' => $this->product)),
+				'HOOK_PRODUCT_TAB' =>  Hook::exec('displayProductTab', array('product' => $this->product)),
+				'HOOK_PRODUCT_TAB_CONTENT' =>  Hook::exec('displayProductTabContent', array('product' => $this->product)),
 				'display_qties' => (int)Configuration::get('PS_DISPLAY_QTIES'),
 				'display_ht' => !Tax::excludeTaxeOption(),
 				'currencySign' => $this->context->currency->sign,