Hi,
(I think we've found what we were loking for)
The point is that all characteristics that you added to rows or columns or the query filter must be added to ONE aggregate. Not to combination of aggregates.
Choose one of your aggregates and add them all to it.
You can add to that aggregate some additional characteristics (those which you have added to free characteristics in the query) but it's not crucial.
Regards,
Leszek