See 'HOWTO: Installing an Application For All Users on Windows NT/2000 From the Command Line Argument or Custom Actions' http://support.installshield.com/kb/view.asp?pcode=ALL&articleid=Q105063

>When I create the Installation package and select the Visual Foxpro Merge modules, the installation package installs the application without a problem; but as soon as another user logs in the machine, the Runtime libraries not found error shows up, even if the files are still there.
>
>Any help will be appretiated.
>
>Thanks
>Fabian