>Hi,
>
>Thank for your advise. I had check the old VFP3 application, there is
>no function called isexclusive.
>In addition, calling the isexclusive without any parameter also give
>the same error.
>
>I am at a loss, please advise.
>Thank you
>
Weird, but just to be sure, that the problem is in ISEXCLUSIVE function comment out this piece of code. Would you still have the same problem? Instead of ISEXCLUSIVE you can use low-level functions. It's even better, because the result will be multi-user...