>This problem occurs even if I run a prg without using tables. for eg.
>If I run the underwritten prg by DO testrun. same "Invalid seek offset " occurs. Intresting part is, if I run the same prg with DO ?, then select the testrun.prg it executes the program without 'invalid seek offset' problem .
>Don't understand why it is behaving like this.
>
>
>*****
>*Testrun.Prg
>*****
>* Test code
>lnstart = SECOND()
>FOR lin = 1 TO 10000
> = TestTimeOut()
>NEXT
>lnstop = SECONDS()
>? lnstop - lnstart
>
>FUNCTION TestTimeOut
> RETURN
>ENDFUNC

Could be a memory conflict. Maybe worth having your PC checked out.