Thanks, but I think here is a mistake.

My problem isn't that the dataset don't give me anything from the SQL-Server 2000. Really both datasets have the same structure and data values. The problem occur when I attempt to apply this to report then I obtain the error. Unfortunately I'm not be able to say you anymore as the system continue executing the process without any more info. I've attempted to find something more debugging it, but I obtain nothing more.

The mystery is still on. Thanks again.