There seems to be a bug when a button is placed on a form with and AspNetPanel whose dock is set to fill the window. The button click event fires the first time but does not fire again until you click somewhere on the aspx page. Please see attached example.
I did not get a notification. I just checked manually. Also, when installing the update it could not kill the AutoUpdater. It was removed from the taskbar icon list but not from memory. I had to kill in task manager to finish the update.