Execute this into your db.
Code:
--
-- Table structure for table `mailbox_insert_queue`
--
DROP TABLE IF EXISTS `mailbox_insert_queue`;
SET @saved_cs_client = @@character_set_client;
SET character_set_client = utf8;
CREATE TABLE `mailbox_insert_queue` (
`sender_guid` int(30) NOT NULL,
`receiver_guid` int(30) NOT NULL,
`subject` varchar(200) NOT NULL,
`body` varchar(500) NOT NULL,
`stationary` int(30) NOT NULL,
`money` int(30) NOT NULL,
`item_id` int(30) NOT NULL,
`item_stack` int(30) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
SET character_set_client = @saved_cs_client;
--
-- Dumping data for table `mailbox_insert_queue`
--
LOCK TABLES `mailbox_insert_queue` WRITE;
/*!40000 ALTER TABLE `mailbox_insert_queue` DISABLE KEYS */;
/*!40000 ALTER TABLE `mailbox_insert_queue` ENABLE KEYS */;
UNLOCK TABLES;
This is for the mailbox problem, make a file copy and paste that, and save it as a .sql and execute it.