>Dear
>
>I have deleted foxuser but faild
>I do use indexing. I use locate for command instead of indexing
>
>Reinstalled Windows and vfp but could not get rid of this error message
>
>The amazing fact is: this software run perfectly on other computers.

Check also this thread Invalid Seek Offset - One solution Thread #1302291 but usually it's very hard to find the corruption. Try changing printers.