Guild deletion code error coemu...

        public static void DeleteGuild(int ID)
        {
            if (Nano.Guilds.ContainsKey(ID))
            {
                Struct.GuildInfo GuToDel = Nano.Guilds[ID];
                foreach (int ChId in GuToDel.GMems)
                {
                    try
                    {
                        MySqlCommand Cmd2 = new MySqlCommand("UPDATE `characters` SET `Guild` = " + 0 + ", `GRank` = " + 0 + ", `GDonation` = " + 0 + " WHERE `CharID` = " + ChId, DatabaseConnection.Connection);
                        Cmd2.ExecuteNonQuery();
                        Cmd2.Connection.Close();
                        Cmd2.Connection.Dispose();
                        Cmd2.Dispose();
                    }
                    catch
                    {
                        //Console.WriteLine("Character not exist anymore");
                    }
                }
                Nano.Guilds.Remove(ID);
            }
            MySqlCommand Cmd = new MySqlCommand("DELETE FROM `guilds` Where `GuildID` = " + ID + "", DatabaseConnection.Connection);
            Cmd.ExecuteNonQuery();// <--- comes up says data reader allready associated blh blh bullshit!
            Cmd.Connection.Close();
            Cmd.Connection.Dispose();
            Cmd.Dispose();
        }