VFP will lock the record for you automatically with pessimistic table buffering as soon as a field is changed. You shouldn't mix RLOCK with buffering (table or record, optimistic or pessimistic), because this will confuse VFP.

HTH

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>I use my file and file buffering = 4 (Table buffering).
>Before write in it, I call RLOCK.
>Ex:
>
>SELECT FILE
>RLOCK
>REPLACE ...
>
>If I call UNLOCK, I get an error (File is in use) with TABLEUPDATE(.t.,.t.)
>
>EX:
>
>IF ! TABLEUPDATE()
> AERROR(zvERR)
>ENDIF
>
>Do you know why?