Eu configurei o mini profiler com o aplicativo asp.net mvc. Também quero criar um perfil do meu banco de dados, de modo que o vinculei ao L2S datacontext como emeste exemplo.

Está funcionando bem para algumas consultas, mas em outras consultas eu acho exceção de referência nula. Quando anexei o código-fonte para depuração, descobri que

 internal void AddSqlTiming(SqlTiming stats)
        {
            Head.AddSqlTiming(stats);
        }

Head A propriedade no método acima é nula no MiniProfiler.cs na linha 198. Alguma idéia do porqu

EDITAR O método a seguir retorna o objeto datacontext

public static EvoletDataContext Get() 
        {
            var connection = ProfiledDbConnection.Get(new SqlConnection(ConfigurationManager.ConnectionStrings["evoletworksConnectionString"].ToString()));
            //var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["evoletworksConnectionString"].ToString());
            //return new EvoletDataContext(connection);
            return DataContextUtils.CreateDataContext<EvoletDataContext>(connection);
        }

E abaixo está a consulta na qual o miniprofiler trava pela primeira vez

public sysModule GetModuleHead(string actionName)
        {
            var val =  (from mod in db.sysModules
                        where
                        mod.ModuleActionResult.ToLower().Equals(actionName.ToLowerInvariant())
                    select mod).SingleOrDefault();
            return val;


        }

Para mais detalhes, consulteessa questã também. Tentei, mas não consegui reproduzir o problema no projeto demo.

Edit 2: Aqui está o stacktrace:

[NullReferenceException: Object reference not set to an instance of an object.]
   MvcMiniProfiler.MiniProfiler.AddSqlTiming(SqlTiming stats) in C:\Dev\mvc-mini-profiler\MvcMiniProfiler\MiniProfiler.cs:241
   MvcMiniProfiler.SqlTiming..ctor(DbCommand command, ExecuteType type, MiniProfiler profiler) in C:\Dev\mvc-mini-profiler\MvcMiniProfiler\SqlTiming.cs:66
   MvcMiniProfiler.SqlProfiler.ExecuteStartImpl(DbCommand command, ExecuteType type) in C:\Dev\mvc-mini-profiler\MvcMiniProfiler\SqlProfiler.cs:50
   MvcMiniProfiler.SqlProfilerExtensions.ExecuteStart(SqlProfiler sqlProfiler, DbCommand command, ExecuteType type) in C:\Dev\mvc-mini-profiler\MvcMiniProfiler\SqlProfiler.cs:95
   MvcMiniProfiler.Data.ProfiledDbCommand.ExecuteDbDataReader(CommandBehavior behavior) in C:\Dev\mvc-mini-profiler\MvcMiniProfiler\Data\ProfiledDbCommand.cs:149
   System.Data.Common.DbCommand.ExecuteReader() +12
   System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +724
   System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +189
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +659
   System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +59
   System.Linq.Queryable.SingleOrDefault(IQueryable`1 source) +265
   UserManagement.Models.FilterRepository.GetModuleHead(String actionName) in D:\Evolet\UserManagement\UserManagement\Models\FilterRepository.cs:14
   UserManagement.Models.DummyAttrib.OnAuthorization(AuthorizationContext filterContext) in D:\Evolet\UserManagement\UserManagement\Models\Filters.cs:30
   Glimpse.Net.Plumbing.GlimpseAuthorizationFilter.OnAuthorization(AuthorizationContext filterContext) +157
   System.Web.Mvc.ControllerActionInvoker.InvokeAuthorizationFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor) +149
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830
   System.Web.Mvc.Controller.ExecuteCore() +135
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +232
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +68
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +44
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +42
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +140
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +61
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +31
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +56
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +110
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +690
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +194