Found the problem with your brilliant "view as text" a/b comparison:
KeySource had a value, and it shouldn't have. Thanks for the tip.

George

--- In IBObjects@y..., "mmenaz" <mmenaz@l...> wrote:
> You should share with us some more details!
> Anyway, first thing that comes to mind: is "Unidirectional" property set to false?
> Second, select "view as text", copy the two query properties definition in two notepad windows, and compare property by property...
> Last, if you change the link grid-datasource-dataset, will it work the same? You will discover if it's a dataset (Query) problem or a grid one. If a grid one, compare grids properties as suggested for queries.
> Hope this will help
> Regards
> Marco Menardi
>
> --- In IBObjects@y..., "georgethenorge" <ghelmke@o...> wrote:
> > I have two TIB_Query objects in a data module. One works perfectly - I can select records with a grid, and use standard First, Next, etc. procedures.
> >
> > The other one displays the data, but I cannot move through it or select a record in any way.
> >
> > Hints anyone?