BCStorm Bug or Error?

http://i44.tinypic.com/24enuon.png



TokenID: 0Invalid Dario bug duing user login: System.InvalidCastException: Specified cast is not valid.
at Butterfly.HabboHotel.Users.Authenticator.HabboFactory.GenerateHabbo(DataRow dRow, DataRow group) in c:\Users\Leon\Desktop\Development\C#\BcStorm\Butterfly\HabboHotel\Users\Authenticator\HabboFactory.cs:line 30
at Butterfly.HabboHotel.Users.UserDataManagement.UserDataFactory.GetUserData(String sessionTicket, String ip, Byte& errorCode) in c:\Users\Leon\Desktop\Development\C#\BcStorm\Butterfly\HabboHotel\Users\UserDataManagement\UserDataFactory.cs:line 295
at Butterfly.HabboHotel.GameClients.GameClient.tryLogin(String AuthTicket) in c:\Users\Leon\Desktop\Development\C#\BcStorm\Butterfly\HabboHotel\GameClients\GameClient.cs:line 241


Any Ideas how to fix it ? :(: