App.config Error

I'm trying to imitate the Getting Started Video using a WinForm but keep getting the following error:

"Configuration system failed to initialize"

on this line of code:

 _context = new LightSpeedContext<CAFEPUnitOfWork>("default");

referring to the <lightSpeedContexts> section of my app.config file.

My app.config file seem to be almost identical to that in the video

What am I doing wrong?

-----------------------------------------------------------------------------------
<?xml version="1.0"?>
 
<configuration>
 
    
<configSections>
    <section name="lightSpeedContext" type="Mindscape.LightSpeed.Configuration.LightSpeedConfigurationSection, Mindscape.LightSpeed"/>
  </configSections>
 
  
  <connectionStrings>
     <add name="CAFEPTest" connectionString=" Source=.\SQLEXPRESS;Initial Catalog=CAFEP;Integrated Security=True" />
  </connectionStrings>
 
 <lightSpeedContexts>
    <add name="default" connectionStringName="CAFEPTest" dataProvider="SqlServer2005"/>
  </lightSpeedContexts>
    
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
 
</configuration>

-------------------------------------------------------------------------

The full error is:

System.Configuration.ConfigurationErrorsException was unhandled
  Message=Configuration system failed to initialize
  Source=System.Configuration
  BareMessage=Configuration system failed to initialize
  Line=0
  StackTrace:
       at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
       at System.Configuration.ClientConfigurationSystem.PrepareClientConfigSystem(String sectionName)
       at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName)
       at System.Configuration.ConfigurationManager.GetSection(String sectionName)
       at Mindscape.LightSpeed.Configuration.LightSpeedConfigurationSection.Read()
       at Mindscape.LightSpeed.LightSpeedContext..ctor(String configurationName)
       at Mindscape.LightSpeed.LightSpeedContext`1..ctor(String configurationName)
       at LightSpeed1C.Form1.button1_Click(Object sender, EventArgs e) in M:\Visual Studio 2010\Projects\LightSpeed1C\LightSpeed1C\Form1.cs:line 28
       at System.Windows.Forms.Control.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.ButtonBase.WndProc(Message& m)
       at System.Windows.Forms.Button.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(IntPtr 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 LightSpeed1C.Program.Main() in M:\Visual Studio 2010\Projects\LightSpeed1C\LightSpeed1C\Program.cs:line 18
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: System.Configuration.ConfigurationErrorsException
       Message=Unrecognized configuration section lightSpeedContexts. (M:\Visual Studio 2010\Projects\LightSpeed1C\LightSpeed1C\bin\Debug\LightSpeed1C.vshost.exe.Config line 6)
       Source=System.Configuration
       BareMessage=Unrecognized configuration section lightSpeedContexts.
       Filename=M:\Visual Studio 2010\Projects\LightSpeed1C\LightSpeed1C\bin\Debug\LightSpeed1C.vshost.exe.Config
       Line=6
       StackTrace:
            at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
            at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
            at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()
            at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
       InnerException: 

Your problem is that in the configSections declaration you have:

<section name="lightSpeedContext" 

but when you use it you have:

<lightSpeedContexts>

i.e. singular vs. plural.  It doesn't matter which you use but it needs to be the same in both places.

Thanks Ivan

(embarrassed)

Regards ... Mark