Microsoft.ACE.OLEDB.12.0提供程序未注册

I have a Visual Studio 2008 solution with two projects (a Word-Template project and a VB.Net console application for testing). Both projects reference a database project which opens a connection to an MS-Access 2007 database file and have references to System.Data.OleDb. In the database project I have a function which retrieves a data table as followsI have a Visual Studio 2008 solution with two p