>>Usually this message appears when there is a filter on table having variables in the filter expression. If variables are not recognized anymore, then filter is cleared.
>
>In other words, it is internal VFP message. AFAIK none of our programs use SET FILTER (I'll verify). Do you know any other circumstances where this error can appear?
>
>Thanks a lot.

There may also be a query where foxpro creates intermediate cursors or filters. Then the message may reflect the internal foxpro work where filters were not released.