I'm trying to trace down why I'm not getting a stack trace for a PageLoadException. 

In my specific case, placing a module on the page seems to work fine in DEV, and its rock solid, has been for years. But mysteriously in product the module renders once, then blows up.  I suspect there's some discombobulation with permissions causing this but without that stack trace its hard to find what.  I set out to find out why.

First, the stupid question.  Is there a setting that turns off stack traces - specifically, all log records have no ExceptionHash and there is of course no consequent exception record generated.  

In investigating this, I track down this OnError handler from PageBase:

 

        protected override void OnError(EventArgs e)
        {
            base.OnError(e);
            Exception exc = Server.GetLastError();
            Logger.Fatal("An error has occurred while loading page.", exc);

/* Stuff */        

    Exceptions.ProcessPageLoadException(exc, strURL);
        }

From what I understand, there's circumstances where Server.GetLastError() in ASP.NET returns null and so what will happen here is that you could wind up with the scenario of actually not getting a stack trace.  Do you think this is what I could be dealing with here or am I just barking up a wrong tree.