[Ken Case]

FatalError, I'm not sure why you're seeing two copies of that "Play Sound" setting, there should be just one Play Sound setting (which will also triggers vibration). There is also supposed to be a setting for whether calendar export is enabled, but it's not an on/off switch like the others (and like your screenshot clearly shows).

I'd love to track down why you're seeing something different from what I'm seeing. (I haven't looked into it yet, but maybe it's only broken in the German localization of OmniFocus?)