Neil,

Have you installed VFP8 or the Visual FoxPro OLE DB Provider on your computer? If you have and you're still getting the error, try adding the following line to your app.config file beneath your connection string (although your really shouldn't have to do this if you've specified the data access class in ABusinessObject):

<add key="TestApp\DataAccessClass" value="DataAccessOleDb" />

Regards,