Hi,

For about a week now I've been getting a strange error that keeps popping up randomly:

A route named 'umbraco-surface-UmbProfile' is already in the route collection. Route names must be unique.
Parameter name: name

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.ArgumentException: A route named 'umbraco-surface-UmbProfile' is already in the route collection. Route names must be unique.
Parameter name: name

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: 


[ArgumentException: A route named 'umbraco-surface-UmbProfile' is already in the route collection. Route names must be unique.
Parameter name: name]
   System.Web.Routing.RouteCollection.Add(String name, RouteBase item) +3713529
   System.Web.Mvc.RouteCollectionExtensions.MapRoute(RouteCollection routes, String name, String url, Object defaults, Object constraints, String[] namespaces) +361
   Umbraco.Web.WebBootManager.RouteLocalSurfaceController(Type controller, String umbracoPath) +274
   Umbraco.Web.WebBootManager.RoutePluginControllers() +362
   Umbraco.Web.WebBootManager.Complete(Action`1 afterComplete) +84
   Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) +395

[HttpException (0x80004005): A route named 'umbraco-surface-UmbProfile' is already in the route collection. Route names must be unique.
Parameter name: name]
   System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +12601933
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +175
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): A route named 'umbraco-surface-UmbProfile' is already in the route collection. Route names must be unique.
Parameter name: name]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12618980
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12458597

I've checked my App_Code folder and it's empty and no other routes have been created that match what is stated in this error.

Using Umbraco 7.3.3.

Anyone experience or come across this? It's getting quite annoying now and I can't reproduce it at will, it just seems to happen at random moments.

Thanks, B.