// reported fix from 1.4.x

controllers/admin/AdminBackupController.php

@@ -142,6 +142,7 @@ class AdminBackupControllerCore extends AdminController
 			'content' => $this->content,
 			'url_post' => self::$currentIndex.'&token='.$this->token,
 		));
+		parent::initContent();
 	}
 
 	/**

controllers/admin/AdminCategoriesController.php

@@ -372,7 +372,10 @@ class AdminCategoriesControllerCore extends AdminController
 			if (!$object->updatePosition((int)Tools::getValue('way'), (int)Tools::getValue('position')))
 				$this->_errors[] = Tools::displayError('Failed to update the position.');
 			else
+			{
+				$object->regenerateEntireNtree();
 				Tools::redirectAdmin(self::$currentIndex.'&'.$this->table.'Orderby=position&'.$this->table.'Orderway=asc&conf=5'.(($id_category = (int)Tools::getValue($this->identifier, Tools::getValue('id_category_parent', 1))) ? ('&'.$this->identifier.'='.$id_category) : '').'&token='.Tools::getAdminTokenLite('AdminCategories'));
+			}
 		}
 		/* Delete multiple objects */
 		else if (Tools::getValue('submitDel'.$this->table))

controllers/admin/AdminCustomerThreadsController.php

@@ -315,9 +315,9 @@ class AdminCustomerThreadsControllerCore extends AdminController
 					'{comment}' => stripslashes($_POST['message_forward']));
 
 					if (Mail::Send(
-						(int)$cookie->id_lang,
+						$this->context->language->id,
 						'forward_msg',
-						Mail::l('Fwd: Customer message', (int)$cookie->id_lang),
+						Mail::l('Fwd: Customer message', $this->context->language->id),
 						$params, $email, null,
 						$current_employee->email, $current_employee->firstname.' '.$current_employee->lastname,
 						null, null, _PS_MAIL_DIR_, true))
@@ -357,7 +357,7 @@ class AdminCustomerThreadsControllerCore extends AdminController
 					);
 					//#ct == id_customer_thread    #tc == token of thread   <== used in the synchronization imap
 					if (Mail::Send(
-						$ct->id_lang,
+						(int)$ct->id_lang,
 						'reply_msg',
 						Mail::l('An answer to your message is available', $ct->id_lang).' #ct'.$ct->id.'#tc'.$ct->token,
 						$params, Tools::getValue('msg_email'), null, null, null, $file_attachment, null,

controllers/admin/AdminImportController.php

@@ -801,9 +801,10 @@ class AdminImportControllerCore extends AdminController
 				$category->doNotRegenerateNTree = true;
 
 				// If id category AND id category already in base, trying to update
-				if ($category->id && $category->categoryExists($category->id))
+				if ($category->id && $category->categoryExists($category->id) && $category->id != 1)
 					$res = $category->update();
-
+				if ($category->id == 1)
+					$this->_errors[] = Tools::displayError('Root category cannot be modify');
 				// If no id_category or update failed
 				if (!$res)
 					$res = $category->add();
@@ -1840,4 +1841,4 @@ class AdminImportControllerCore extends AdminController
 	{
 		$this->warnings[] = $product_name.(isset($product_id) ? ' (ID '.$product_id.')' : '').' '.Tools::displayError($message);
 	}
-}
+}