Ok - I have a Xamarin Android app on my phone which was installed via Visual Studio, i.e. a development/debug release. It's been running fine but now fails to open - a brief view of the main activity and then it closed. No notifications and Insights has nothing to go on.
Connecting to Visual Studio and viewing the logcat trace I can see that there appears to be an issue locating a MonoDroid component - but why would this start to happen when I've not changed the installation in a week or so?
Obviously my phone has been downloading app updates for other apps but why would this have screwed with this one?
Logcat output attached - phone is a HTC One M8 running Lollipop which I use day to day.