I have this error
08/12/2015 22:47:42: System.InvalidCastException: Specified cast is not valid.
at Essential.HabboHotel.Users.Authenticator.Authenticator.CreateHabbo(DataRow habboData, String ssoTicket, GameClient session, UserDataFactory otherData) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\Users\Authenticator\Authenticator.cs:line 20
at Essential.HabboHotel.Users.Authenticator.Authenticator.CreateHabbo(String ssoTicket, GameClient Session, UserDataFactory userData, UserDataFactory otherData) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\Users\Authenticator\Authenticator.cs:line 12
at Essential.HabboHotel.GameClients.GameClient.tryLogin(String AuthTicket) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\GameClients\GameClient.cs:line 107
08/12/2015 22:47:42: Error: System.NullReferenceException: Object reference not set to an instance of an object.
at Essential.HabboHotel.GameClients.GameClient.Disconnect(String Reason) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\GameClients\GameClient.cs:line 405
at Essential.HabboHotel.GameClients.GameClient.tryLogin(String AuthTicket) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\GameClients\GameClient.cs:line 119
at Essential.Communication.Messages.Handshake.SSOTicketMessageEvent.Handle(GameClient Session, ClientMessage Event) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\Communication\Messages\Handshake\SSOTicketMessageEvent.cs:line 13
at Essential.HabboHotel.GameClients.GameClient.ParsePacket(Byte[]& bytes) in C:\Users\Gandalf\Desktop\New folder (2)\Essential\HabboHotel\GameClients\GameClient.cs:line 468