This is the full error. It only happens when i turn debug mode on. Otherwise the admin runs fine.
[NullReferenceException: Object reference not set to an instance of an object.]
Microsoft.WebTools.BrowserLink.Runtime.Tracing.PageInspectorHttpModule.OnPreRequestHandlerExecute(Object sender, EventArgs e) +646
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +222
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +219
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93