Hi. Any idea how to resolve this error, which i get when i preview the related links;

Server Error in '/' Application.

Object reference not set to an instance of an object. 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.NullReferenceException: Object reference not set to an instance of an object.

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:

[NullReferenceException: Object reference not set to an instance of an object.] System.Object.GetType() +0 Umbraco.Web.Routing.ContentLastChanceFinderByNotFoundHandlers.HandlePageNotFound(PublishedContentRequest docRequest) +182 Umbraco.Web.Routing.ContentLastChanceFinderByNotFoundHandlers.TryFindContent(PublishedContentRequest docRequest) +16 Umbraco.Web.Routing.PublishedContentRequestEngine.HandlePublishedContent() +540 Umbraco.Web.Routing.PublishedContentRequestEngine.UpdateRequestOnMissingTemplate() +33 Umbraco.Web.Routing.PublishedContentRequest.UpdateOnMissingTemplate() +34 Umbraco.Web.Mvc.RenderRouteHandler.GetHandlerForRoute(RequestContext requestContext, PublishedContentRequest publishedContentRequest) +208 System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context) +12465707 Umbraco.Web.UmbracoModule.ProcessRequest(HttpContextBase httpContext) +571 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.36480

I am the admin for the site and can only edit through the web front end.

The whole site works and the related links do not show at all.

Any help would be most helpful