Sitecore Tracker.Current is not initialized
<p>I'm having this issue related with Tracker.</p>

<pre><code>[InvalidOperationException: Tracker.Current is not initialized]
   Sitecore.Analytics.Pipelines.StartAnalytics.StartTracking.Process(PipelineArgs args) +304
   (Object , Object[] ) +74
   Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) +484
   Sitecore.Analytics.Pipelines.StartAnalytics.StartAnalyticsPipeline.Run() +293
   Sitecore.Mvc.Analytics.Pipelines.MvcEvents.RequestBegin.StartTracking.Process(RequestBeginArgs args) +139
   (Object , Object[] ) +74
   Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) +484
   Sitecore.Mvc.Pipelines.PipelineService.RunPipeline(String pipelineName, TArgs args) +184
   Sitecore.Mvc.Routing.RouteHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +74
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +923
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +157
</code></pre>

<p>In the web.config I've the </p>

<blockquote>
  <p>enableTracking="true"</p>
</blockquote>

<p>If I set to false it works but there's no Tracking</p>