>Can somebody explain what causes this error?
>If a file is opened exclusively and you try to open
>it you get the message File Access Denied.
>If a file is opened with SET EXCLUSIVE OFF
>shouldnt any user be able to open it.
>Im not sure what this means !

Bob, for example the file may be FLOCK()ed by somebody else from within the program, also some of commands (like APPEND) lock the file header to change the record count there.

Nick