Error in Real Estate Application

[John1grid]

I need to run the example Real Estate Application to learn how Grid FX works.  I can get the main page but clicking any link causes an error.  Can anyone suggest how to fix it?  Below is the error page.

Server Error in '/Real Estate' Application.

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Failed to map the path '/'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Failed to map the path '/'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

Stack Trace:

[invalidOperationException: Failed to map the path '/'.]

System.Web.Configuration.ProcessHostConfigUtils.MapPathActual(String siteName, VirtualPath path) +261

System.Web.Configuration.ProcessHostMapPath.MapPathCaching(String siteID, VirtualPath path) +580

System.Web.Configuration.ProcessHostMapPath.GetPathConfigFilenameWorker(String siteID, VirtualPath path, String& directory, String& baseName) +19

System.Web.Configuration.ProcessHostMapPath.System.Web.Configuration.IConfigMapPath.GetPathConfigFilename(String siteID, String path, String& directory, String& baseName) +37

System.Web.Configuration.HostingPreferredMapPath.GetPathConfigFilename(String siteID, String path, String& directory, String& baseName) +77

System.Web.Configuration.WebConfigurationHost.GetStreamName(String configPath) +166

System.Configuration.Internal.DelegatingConfigHost.GetStreamName(String configPath) +10

System.Configuration.BaseConfigurationRecord.InitConfigFromFile() +249

[ConfigurationErrorsException: An error occurred loading a configuration file: Failed to map the path '/'.]

System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal) +245611

System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors) +40

System.Configuration.Configuration..ctor(String locationSubPath, Type typeConfigHost, Object[] hostInitConfigurationParams) +412

System.Configuration.Internal.InternalConfigConfigurationFactory.System.Configuration.Internal.IInternalConfigConfigurationFactory.Create(Type typeConfigHost, Object[] hostInitConfigurationParams) +29

System.Web.Configuration.WebConfigurationHost.OpenConfiguration(WebLevel webLevel, ConfigurationFileMap fileMap, VirtualPath path, String site, String locationSubPath, String server, String userName, String password, IntPtr tokenHandle) +961

System.Web.Configuration.WebConfigurationManager.OpenWebConfigurationImpl(WebLevel webLevel, ConfigurationFileMap fileMap, String path, String site, String locationSubPath, String server, String userName, String password, IntPtr userToken) +84

System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(String path) +36

ow.a() +25

GridFX.WebForms.GridResourceHandler..cctor() +451

[TypeInitializationException: The type initializer for 'GridFX.WebForms.GridResourceHandler' threw an exception.]

GridFX.WebForms.GridResourceHandler.b(Control A_0) +0

GridFX.WebForms.Grid.d(Object A_0, EventArgs A_1) +392

System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +2063056

System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2247

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Version Information: Microsoft .NET Framework Version:2.0.50727.1434; ASP.NET Version:2.0.50727.1434