Hi, Jean.

>The VFP EXE Object is calling other VFP Applications that may be either Selecting Data from a Table or Updating Data in a Table. If Table is not Open that caused a VFP dialog box to come up.
>
>When an ASP web Page is calling a method in Web Service, the behavior above seem to hung because user cannot see the Dialog Box ( DLL does allow user Interface such as Message box or dailog box)

This is solved in VFP 9.0 using the new SET TABLEPROMPT OFF.

With this setting, if a select has any missing table, it just throws an error that you can trap as usual.

Hope this helps,