Strange error. With TDBLookupComboBox and TDBLookupListBox.
In TIBConnect-SQLdb.
to reproduce, drop:
IBConnection, SQLTransaction, SQLQuery, Datasource, DBLookupComboBox or DBLookupListBox.
In DBLookupComboBox or DBLookupListBox set ListSource-DataSource, Listfield-any, KeyField-any and run in runtime or designtime. Error DataBase connect string (DataBaseName) not filled in!
sorry for my bad English.
example in attached.
Lazarus SVN 1.1 37682, FPC 2.7.1