Error when set "SQLClientDataSet Active" to TRUE?

[Jorge Machado]

Using
Builder 6.0
TSQLConnection
TDataSource
TSQLClientDataSet

TDBGrid to display table data

Meesage: 49, Severity: 1, ct_send(), user api layer: external error.
This routine cannot be called because another command structure has results pendig.

Thanks

[VISOCO Support]

Do not use TSQLClientDataSet (it was deprecated). Use of "SQLDataSet - DataSetProvider - ClientDataSet" scheme is strongly recommended.

(it's not our opinion but Borland's )