Warning: No Session object in context

My web app has been shutting down in the debugger with this warning in the messages area.

At this point I’d just like some clarification as to what it means? Is my session quitting on its own?

That’s usually because of code running in a thread or App.HandleSpecialURL where there is no active Session object. Most controls will refuse to operate without an active Session.

Hm. I don’t recall either of those being code that would be running. I guess I’ll have to step through the thing to find out for sure.

Thx.