I'm trying to run MM Northwind Sample Application_CSharp and it works good when using mssql server. When I switch to vfp data and click Customer->Orders I get an application exception "Keyword not supported: 'provider'".

Here is part of my app.config:

add key="CustA\Northwind\Connection" value="Data Source=GMI160\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=True"
add key="CustA\Northwind\DataAccessClass" value="DataAccessSql" 
add key="CustB\Northwind\Connection" value="Provider=vfpoledb.1;Data Source=C:\Program Files\Mere Mortals .NET Framework 2008\Samples\VFPData\northwind.dbc" 
add key="CustB\Northwind\DataAccessClass" value="DataAccessOleDb" 

...and here is the stack trace:

   at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey)
   at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules)
   at System.Data.SqlClient.SqlConnectionString..ctor(String connectionString)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String connectionString, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
   at System.Data.SqlClient.SqlConnection.ConnectionString_Set(String value)
   at System.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
   at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
   at OakLeaf.MM.Main.Data.mmDataAccessSql.CreateSqlConnection()
   at OakLeaf.MM.Main.Data.mmDataAccessSql.OpenSqlConnection()
   at OakLeaf.MM.Main.Data.mmDataAccessSql.OpenConnection()
   at OakLeaf.MM.Main.Data.mmDataAccessBase.ExecScalar(IDbCommand command)
   at OakLeaf.MM.Main.Data.mmDataAccessBase.ExecScalar(String command, IDbDataParameter[] dataParams)
   at OakLeaf.MM.Main.Data.mmDataAccessBase.ExecScalar(String command)
   at OakLeaf.MM.Main.Data.mmDataAccessSql.get_DatabaseVersion()
   at OakLeaf.MM.Main.Data.mmDataAccessSql.GetEmptyDataSetBySproc(DataSet ds, String tableName, String schema, String sprocName, DataTable sprocParamsTable)
   at OakLeaf.MM.Main.Data.mmDataAccessSql.GetEmptyDataSetBySproc(DataSet ds, String tableName, String schema, String sprocName)
   at OakLeaf.MM.Main.Business.mmBusinessObject.GetEmptyDataTable(DataSet& ds, String tableName, mmDataAccessBase dao)
   at OakLeaf.MM.Main.Business.mmBusinessObject.GetEmptyDataSet(DataSet ds, String tableName, String databaseKey)
   at OakLeaf.MM.Main.Business.mmBusinessObject.GetEmptyDataSet(String tableName, String databaseKey)
   at OakLeaf.MM.Main.Business.mmBusinessObject.GetEmptyDataSet(String tableName)
   at OakLeaf.MM.Main.Business.mmBusinessObject.GetEmptyDataSet()
   at OakLeaf.MM.NorthwindSample.CustomerOrdersForm..ctor() in C:\Program Files\Mere Mortals .NET Framework 2008\Samples\MM Northwind Sample Application_CSharp\CustomerOrdersForm.cs:line 53
   at OakLeaf.MM.NorthwindSample.Main.Windows.Forms.MainForm.CustomerOrdersBar_Click(Object sender, EventArgs e) in C:\Program Files\Mere Mortals .NET Framework 2008\Samples\MM Northwind Sample Application_CSharp\MainForm.cs:line 68
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ToolStrip.WndProc(Message& m)
   at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at OakLeaf.MM.NorthwindSample.Main.AppMainEntry.Main() in C:\Program Files\Mere Mortals .NET Framework 2008\Samples\MM Northwind Sample Application_CSharp\Main.cs:line 77