Server Error in '/' Application

Object reference not set to an instance of an object

Description: HTTP 500. Error processing request.

Stack Trace:

System.NullReferenceException: Object reference not set to an instance of an object
  at System.Web.HttpApplication.LocateHandler (System.Web.HttpRequest req, System.String verb, System.String url) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url, Boolean ignoreContextHandler) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication+<Pipeline>c__Iterator6.MoveNext () [0x00000] in <filename unknown>:0

Version information: Mono Runtime Version: 2.10.8.1 (Debian 2.10.8.1-8); ASP.NET Version: 2.0.50727.1433