What folder is the file in?

>Users are adding documents from windows 7 and XP clients in LAN.
>alusdok.dbf record one record containing new doc is is locked using rlock() , updated and rlock is released.
>
>After moving to Windows 2008 64 bit server, VFP 9 application produces errors
>
>1157 Cannot update the File 'alusdok.dbf'
>
>at random places. How to fix this ?
>
>Andrus.