Nadya,

The problem turned out to be actual changes in the data - and buffering problems. See my reply to myself, if you are interested in the details.

Hilmar.

>>In the command window, the SEEK() function finds a certain record. In the executable, it doesn't. I already checked, with the debugger:
>>
>>

That the same table is accessed.
>>

That the same index is used.
>>

That the seek expression is the same.
>>

That the table isn't filtered in either case.
>>

SET DELETED is ON in both cases.
>>

SET COLLATE is MACHINE in both cases.
>>
>>Are there any other methods to foul up the SEEK() function?
>>
>>TIA, Hilmar.
>
>Check for SET EXACT

Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)