Very simple duplication - go to the Calendar app. It will immediately display the full-screen error:
Runtime Exception: Undefined variable: date
Very simple duplication - go to the Calendar app. It will immediately display the full-screen error:
Runtime Exception: Undefined variable: date
(I got an error when I created this bug report, which is why I went and added another one. Then, I discover they're BOTH in existence. Meh. Merged duplicate into T10766: Calendar - Unhandled Exception, since I referenced that task elsewhere.)