Joan Dorrepaal wrote: >When I open DISQLite3_World_ClientDataSet.dpr demo I get error "Error >creating form: Operation not allowed on a unidirectional dataset". It >arises at opening the form TfrmWorld. How can I open this form in >design mode? I do not see this error here. I can open DISQLite3_World_ClientDataSet_Form.pas without problems (just tested with D7 and D2007). I can even set the ClientDataSet.Active property to True in Design mode and all controls populate accordingly in D2007 (D7 throws a midas.dll exception, but this is outside the scope of this project). I am afraid, but I do not see why it is not working for you. Ralf _______________________________________________ Delphi Inspiration mailing list yunqa@xxxxxxxxxxxxx //www.freelists.org/list/yunqa